Search

Challenges in using MRI in shoulder evaluation include defining the indications for ordering a scan, interpreting the findings, and determining which abnormalities require treatment. Determination of the presence or absence of recent trauma is the most important part of the history. Radiography displays some features of the bony anatomy better than MRI. Several MRI findings increase with age and do not require attention unless they can be established as the source of pain. Acromioclavicular arthritis found on MRI often does not require treatment. Evaluation of the labrum with magnetic resonance arthrography may be more accurate than with MRI. Relating clinical history and physical examination findings with those of the MRI examination is particularly important for rotator cuff evaluation. [ABSTRACT FROM AUTHOR]

STUDY DESIGN: Retrospective morphometric population study. OBJECTIVE: To characterize pedicle and spinal canal morphology of the achondroplastic lower thoracic and lumbar vertebrae and to suggest dimensions for improving pedicle screw selection and placement. SUMMARY OF BACKGROUND DATA: Although morphometric population studies exist for various races, to our knowledge, no such analysis has been made in achondroplastic patients. METHODS: With computer software, we measured pedicle parameters on the computed tomography images of 19 adult achondroplastic patients. RESULTS: Pedicle and chord lengths ranged from 9.5-12.5 mm and 29.5-36.4 mm, respectively. Transverse pedicle diameter increased from T9 (5.5 mm) to L5 (14.2 mm). Sagittal pedicle diameter declined from L1 (11.6 mm) to L5 (7.8 mm). Transverse angulation was greatest at L5 (15.7 degrees ) and smallest at T12 (1.1 degrees ). Pedicles were directed cranially at all levels, ranging from 3.8 degrees -15.6 degrees . Interpedicular distance and cross-sectional area were smallest at L4 (14.9 mm and 119 mm, respectively). Pedicle starting points diverged from T9 (13.6 mm) to L5 (19.2 mm2). CONCLUSION: Achondroplastic pedicle morphology differs markedly from those of the normal spine: chord lengths are substantially shorter, pedicles are inclined cranially, pedicle starting points diverge progressively in the lumbar spine, and pedicle shape transitions from vertically to horizontally oriented ellipsoids along the lumbar spine. Consideration of this variation could maximize the effectiveness and safety of pedicle instrumentation. [ABSTRACT FROM AUTHOR]

Background: The utilization of peripheral nerve blocks in orthopaedic surgery has paralleled the rise in the number of ambulatory surgical procedures performed. Optimization of pain control in the perioperative orthopaedic patient contributes to improved patient satisfaction, early mobilization, decreased length of hospitalization, and decreased associated hospital and patient costs. Our purpose was to provide a concise, pertinent review of the use of peripheral nerve blocks in various orthopaedic procedures of the lower extremity, with specific focus on procedural anatomy, indications, patient outcome measures, and complications.Methods: We reviewed the literature and reference textbooks on commonly performed lower-extremity peripheral nerve block procedures in orthopaedic surgery, focusing on those most commonly used.Results: The use of lower-extremity peripheral nerve blocks is a safe and effective approach to perioperative pain management. Different techniques and timing can have an important impact on patient satisfaction, and each technique has specific indications and complications. For major hip surgery, one of the most commonly used is the lumbar plexus block, which can result in early mobilization, reduced postoperative pain, and decreased opioid-associated adverse events. Associated complications include epidural spread of anesthesia, retroperitoneal hematoma formation, and postoperative falls. For arthroscopic and open knee procedures, the femoral nerve block is frequently used adjunctively. It provides improved early postoperative pain control, early mobilization with therapy, and increased patient satisfaction compared with intra-articular or intravenous opioids alone; it also provides cost savings. However, some studies have shown no significant difference in outcome measures compared with intra-articular opioids alone for arthroscopic anterior cruciate ligament reconstruction. Associated complications include nerve injury, intravascular injection, and postoperative falls.Conclusions: The use of peripheral nerve blocks in lower-extremity surgery is becoming a mainstay of perioperative pain management strategy. [ABSTRACT FROM AUTHOR]

Introduction: The incidence of adhesive capsulitis (AC) is higher in patients with diabetes mellitus. While AC is usually treated non-operatively, diabetic patients are more likely to require more extensive treatments such as manipulation under anesthesia (MUA) or arthroscopic capsular release. Despite the recent surge in popularity of GLP-1 agonists ("GLP-1s") for the treatment of type 2 diabetes (T2DM), there is a lack of literature describing the effect of GLP-1 use on the incidence and management of AC in patients with T2DM. We aimed to compare T2DM patients with and without GLP-1 use, and determine differences in rates of AC, rates of operative AC management, and rates of 90-day postoperative complications among operatively managed AC patients., Methods: A retrospective cohort analysis of the PearlDiver database from 2010-2022 was performed to identify T2DM patients with AC. Exclusion criteria included patients <18 years old, type 1 diabetes, <2-year follow-up, and medical conditions that were a contraindication for GLP-1 use. Four cohorts were identified: 1) T2DM taking GLP-1s, 2) T2DM not taking GLP-1s, 3) T2DM with AC taking GLP-1s, and 4) T2DM with AC not taking GLP-1s. The primary outcome was the proportion of T2DM patients who developed AC. Secondary outcomes included rates of operative management and 90-day postoperative medical complications. A 1:1 propensity score match was performed, controlling for age, gender, Charlson Comorbidity Index, obesity, tobacco use, hypothyroidism, metformin use, insulin use, and the presence of complicated diabetes. Chi-square and Multivariable Linear Regression analyses were performed., Results: 100,000 T2DM patients taking GLP-1s, and 100,000 T2DM patients not taking GLP-1s were randomly sampled. After matching, GLP-1 patients were more likely to develop AC (odds ratio [OR]=1.28, p<0.001). 253,717 T2DM patients with AC were then identified, of which, 46,156 (18.2%) were taking GLP-1s. After matching, GLP-1 users had higher odds of requiring operative management for AC compared to non-GLP-1 users (OR=1.18, p<0.001). The odds of undergoing MUA were significantly higher among GLP-1 users (OR=1.20, p<0.001), however, there was no difference in the odds of undergoing capsular release (OR=0.68, p=0.29)., Discussion: Among a national cohort of T2DM patients, patients taking GLP-1 agonists had higher odds of developing AC and requiring operative management for AC when compared to those not taking GLP-1s. These results can be useful when counseling T2DM patients who develop AC while taking GLP-1s to better inform these patients of the increased chance of requiring more extensive treatment., (Copyright © 2025. Published by Elsevier Inc.)

Background: Unicompartmental knee arthroplasty (UKA) is a surgical treatment for knee osteoarthritis associated with lower morbidity compared with total knee arthroplasty (TKA) in patients with isolated unicompartmental knee arthritis. As disparities have been noted broadly in arthroplasty care, it follows that such disparities might be present in the utilization of UKA relative to TKA. This study therefore examined racial/ethnic, socioeconomic, and payer status differences in utilization of UKA., Methods: Patients who underwent UKA or TKA between 2016 and 2020 in the National Inpatient Sample were identified. Multivariable Poisson regression models adjusted for hospital geographic region and patient characteristics [age, sex, and Elixhauser Comorbidity Index (ECI)] were used to examine the effect of race/ethnicity, socioeconomic status, and payer status on incidence rate ratio of UKA relative to TKA., Results: Of the 8472 UKA patients and 639,937 TKA patients identified between 2016 and 2020, 8027 (94.7%) UKA patients and 606,028 (94.7%) TKA patients met inclusion criteria. Patients who underwent UKA were significantly younger (63.5 ± 10.7 years) than patients who underwent TKA (66.8 ± 9.5 years; p < 0.001) and had significantly lower ECI scores (1.8 ± 1.5) than patients who underwent TKA (2.2 ± 1.6; p < 0.001). Black patients were less likely to undergo UKA relative to TKA compared with white patients [incidence rate ratio (IRR) 0.64, confidence interval (CI) 0.58-0.71, p < 0.001]. Compared with patients in income quartile 4, patients in income quartiles 1 and 2 underwent UKA at a lower relative rate (IRR 0.85, CI 0.79-0.90, p < 0.001 and IRR 0.87, CI 0.82-0.93, p < 0.001, respectively). Compared with patients with private insurance, patients with Medicare underwent UKA at a lower relative rate (IRR 0.83, CI 0.79-0.88, p < 0.001)., Conclusions: Black patients, lower-income patients, and Medicare-insured patients undergo UKA at a lower relative rate than white, higher-income, and privately insured patients, respectively. Further research may help elucidate reasons for these differences and identify targets for intervention., Competing Interests: Declarations. Ethics approval and consent to participate: Not applicable. As the NIS is a large database containing deidentified patient information, studies using this database do not constitute human subjects research. Consent for publication: Not applicable. Competing interests: The authors declare that they have no competing interests., (© 2024. The Author(s).)

Introduction: Osteoporosis screening and subsequent treatment has been shown to be efficacious in decreasing the rates of fragility fractures and periprosthetic fractures (PPF). However, current screening and treatment rates are low. This study aims to determine (1) the prevalence of total shoulder arthroplasty (TSA) patients who meet criteria for osteoporosis screening, (2) the prevalence of those screened, and (3) the 5-year cumulative incidence of fragility fracture (FF) and periprosthetic fractures (PPF)., Methods: The PearlDiver database was used to identify all patients older than 50 years who underwent TSA. Guidelines from the American Association of Clinical Endocrinologists were used to stratify patients into "high risk" and "low risk" of osteoporosis cohorts using International Classification of Disease codes for various risk factors. The prevalence of osteoporosis screening using dual-energy x-ray absorptiometry (DXA) scan was analyzed, and the 5-year cumulative incidence of FF and PPF was calculated between the "low-risk" and "high-risk" groups using Kaplan-Meier analysis., Results: In total, 66,140 (65.5%) who underwent TSA were considered "high risk" for osteoporosis. Of the "high-risk" patients, 11.7% patients received routine osteoporosis screening preoperatively. Within 5 years, "high-risk" TSA patients had markedly higher cumulative incidence for PPF (HR: 1.4; 95% CI: 1.0-1.9; P = 0.037) and FF (HR: 2.42; 95% CI: 2.1-2.8; P < 0.001) when compared with those at "low risk"., Discussion: There is a high prevalence of osteoporosis among patients undergoing TSA but a low rate of routine osteoporosis screening in this cohort. Patients with osteoporosis who are categorized as "high risk" have an increased rate of fragility fractures and PPF. Therefore, there is an opportunity to increase appropriate osteoporosis screening and management in this cohort, which may affect future risk of FF and periprosthetic fracture., Level of Evidence: III., (Copyright © 2024 by the American Academy of Orthopaedic Surgeons.)

Background: The influence of position of the humeral tray (inlay or onlay) on clinical outcomes in reverse shoulder arthroplasty (RSA) is a topic of debate. The purpose of this study was to compare clinical and radiographic outcomes of patients with cuff tear arthropathy treated with RSA systems with inlay or onlay humeral tray design, similar neck-shaft angles, and lateralized glenospheres., Methods: This was a retrospective study of prospectively obtained data from 1 tertiary care center. We identified all patients who underwent primary RSA between 2009 and 2017 (N = 511). We included 102 patients with diagnosed cuff tear arthropathy treated with RSA prostheses with a lateralized glenosphere and 135° neck-shaft angle (with either an inlay or onlay humeral tray design) who had a minimum of 2 years of follow-up (mean, 44 months; range, 24-125 months). Sixty-three patients (62%) had an inlay humeral tray (inlay group) and 39 (38%) had an onlay tray (onlay group). All patients underwent preoperative and postoperative evaluations, including measures of patient-reported outcomes (PROs), shoulder range of motion (ROM) testing, and radiographic imaging. Clinical relevance of changes in PROs and ROM was evaluated using published values for minimal clinically important differences., Results: The 2 groups did not differ by demographic characteristics except for a higher proportion of women in the inlay group (75%) than in the onlay group (56%) (P = .04). Preoperative PROs and ROM were not significantly different between groups. At final follow-up, PROs and ROM were not different between groups in terms of statistical significance or clinical relevance. We found no significant differences in the rate of baseplate loosening (inlay, 3.2% vs. onlay, 5.1%, P = .63), revision surgery (inlay, 0% vs. onlay 5.1%, P = .07), acromial stress fracture (inlay, 3.2% vs. onlay, 5.1%, P = .63), prosthesis dislocation (inlay, 0% vs. onlay, 2.6%, P = .20), or scapular notching (inlay, 21% vs. onlay, 7.7%, P = .08)., Conclusion: At 2-year minimum follow-up, the position of the humeral tray in RSA prostheses (either inlay or onlay) for cuff tear arthropathy was not associated with PROs, shoulder ROM, or rates of complications, including baseplate loosening, acromial stress fracture, and scapular notching., (Copyright © 2024 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Background: Patients undergoing total knee arthroplasty (TKA) tend to have comorbidities such as obesity, hypertension, and cancer, which are associated with advanced age. This study aimed to elucidate the associations of these comorbidities with hospital charge (HC), hospital costs (HCos), and length of stay (LOS)., Methods: A national database was queried for patients who underwent primary TKA from 2012 to 2020. There were 30 comorbidities classified using the Elixhauser comorbidity index. For each comorbidity of interest, patients were matched to another patient by age, sex, and all other comorbidities except the comorbidity of interest. Matched cohorts were analyzed via multivariable regression analyses controlled for age, sex, procedure year, hospital location, and comorbidities to predict increases in HC, HCo, and LOS. A total of 1,014,831 patients were included., Results: Mean HC, HCo, and LOS were $64,097, $17,299, and 2.5 days, respectively. Weight loss, blood loss anemia, coagulopathies, and fluid and electrolyte disorders were associated with the largest increases in HC, with 6, 5, 5, and 5% increases, respectively (P < 0.05). Pulmonary hypertension, non-metastatic tumors, paralysis, and obesity were associated with increased HCo, with 6, 4, 4, and 4% increases, respectively (P < 0.05). All comorbidities except hypothyroidism were associated with increased LOS. Pulmonary hypertension, weight loss, paralysis, fluid and electrolyte disorders, and human immunodeficiency virus/acquired immunodeficiency syndrome were associated with were associated with 53, 21, 15, 14, and 12%, respectively, increased odds of having LOS greater than or equal to 4 days' increase (P < 0.05)., Conclusion: This study offers targets for the reduction of HC, HCo, and LOS for patients with these ailments through protocol change. Optimization programs targeting malnourished patients, patients with pulmonary hypertension, and other comorbidities are encouraged. These results also provide clinicians with a quantifiable way to communicate financial burden and recovery time after TKA to patients' unique problem lists., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Background: Racial disparities in orthopedic surgery outcomes have been extensively documented, highlighting systemic biases in care. Proximal humerus fractures (PHFs), about 6% of all fractures, are rising, especially among the elderly. Despite the prevalence of PHFs, a research gap exists regarding racial disparities in postoperative complications and outcomes., Methods: Data from the American College of Surgeons NSQIP database from 2006 to 2021 were analyzed, including 41,285 patients with PHFs. CPT and ICD codes guided inclusion and exclusion criteria. Propensity-score matching balanced a cohort of 17,052 patients. Demographic variables, comorbidities, and outcomes were analyzed using univariate statistics, chi-square tests, and Fisher's exact tests., Results: Post propensity-score matching, significant demographic disparities emerged between white and minority patients. Minority patients had longer operative times ( p  < .001) and hospital stays ( p  = .001) than white patients. Minority patients also exhibited higher rates of mortality ( p  = .04) and unplanned re-intubation ( p  = .04)., Conclusion: This study revealed significant racial disparities in early postoperative outcomes for PHFs. Despite surgical advancements, minorities have prolonged operative times, extended hospital stays, and heightened risks of adverse events. Action is needed to ensure healthcare equity and justice and to address disparities in PHF surgical management across diverse demographics., Level of Evidence: III., Competing Interests: The authors declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: Matthew J. Best: Arthrex, Inc: Other financial or material support; Smith & Nephew: Other financial or material support; Stryker: Other financial or material support; not related to the present study. Dr. Srikumaran serves as a board or committee member for AAOS, American Shoulder and Elbow Surgeons, and IASES; reports stock or stock options from ROM3, Sonogen, and Tigon Medical; is a paid consultant for, and receives intellectual property royalties from, Fx Shoulder and Tigon Medical; receives other financial or material support from Arthrex, DePuy–a Johnson & Johnson Company, and Thieme; and has been a paid presenter or speaker for, and received research support from, Fx Shoulder; not related to the present study. The other authors report no potential conflicts of interest, including financial interests, activities, relationships, and affiliations., (© The Author(s) 2024.)

Background: Rotator cuff repair (RCR) is a frequently performed outpatient orthopaedic surgery, with substantial financial implications for health-care systems. Time-driven activity-based costing (TDABC) is a method for nuanced cost analysis and is a valuable tool for strategic health-care decision-making. The aim of this study was to apply the TDABC methodology to RCR procedures to identify specific avenues to optimize cost-efficiency within the health-care system in 2 critical areas: (1) the reduction of variability in the episode duration, and (2) the standardization of suture anchor acquisition costs., Methods: Using a multicenter, retrospective design, this study incorporates data from all patients who underwent an RCR surgical procedure at 1 of 4 academic tertiary health systems across the United States. Data were extracted from Avant-Garde Health's Care Measurement platform and were analyzed utilizing TDABC methodology. Cost analysis was performed using 2 primary metrics: the opportunity costs arising from a possible reduction in episode duration variability, and the potential monetary savings achievable through the standardization of suture anchor costs., Results: In this study, 921 RCR cases performed at 4 institutions had a mean episode duration cost of $4,094 ± $1,850. There was a significant threefold cost variability between the 10th percentile ($2,282) and the 90th percentile ($6,833) (p < 0.01). The mean episode duration was registered at 7.1 hours. The largest variability in the episode duration was time spent in the post-acute care unit and the ward after the surgical procedure. By reducing the episode duration variability, it was estimated that up to 640 care-hours could be saved annually at a single hospital. Likewise, standardizing suture anchor acquisition costs could generate direct savings totaling $217,440 across the hospitals., Conclusions: This multicenter study offers valuable insights into RCR cost as a function of care pathways and suture anchor cost. It outlines avenues for achieving cost-savings and operational efficiency. These findings can serve as a foundational basis for developing health-economics models., Level of Evidence: Economic and Decision Analysis Level III. See Instructions for Authors for a complete description of levels of evidence., Competing Interests: Disclosure: No external funding was received for this work. The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJS/I288)., (Copyright © 2024 by The Journal of Bone and Joint Surgery, Incorporated.)

Background: Osteoporosis, a prevalent bone density disorder, introduces a complex dynamic in the context of total shoulder arthroplasty (TSA). However, despite the well-established association between osteoporosis and an elevated risk of revision, the existing literature lacks comprehensive insights into the impact of anti-osteoporotic therapy on surgical outcomes in the setting of TSA. Thus, the purpose of this study was to investigate whether anti-osteoporotic therapy correlates with improved revision outcomes following TSA., Methods: A retrospective cohort analysis was performed using a national all payer's claims database. Patients who underwent TSA were identified using Current Procedural Terminology and International Classification of Diseases procedure codes. Patients with a preoperative diagnosis of osteoporosis were included and stratified into 2 groups: (1) patients with osteoporosis who underwent anti-osteoporotic therapy within 6 months prior to surgery (anti-OP cohort) and (2) patients with osteoporosis who never received anti-osteoporotic treatment (no anti-OP cohort). Primary outcomes included the incidence of 2-year all-cause revision, periprosthetic fracture, periprosthetic joint infection, and mechanical loosening. Univariate and multivariable regression analysis was conducted to compare outcomes between the 2 cohorts., Results: In total, 40,532 osteoporotic patients were included in this study, with 11,577 (28.5%) having undergone anti-osteoporotic treatment. Patients who did not receive anti-osteoporotic treatment had significantly higher odds of 2-year all-cause revision (odds ratio: 1.31; P < .001) and mechanical loosening (odds ratio: 1.25; P < .001) following TSA when compared to those treated for osteoporosis., Discussion: This study demonstrates a significant association between anti-osteoporotic therapy and reduced rates of 2-year revision following TSA. Orthopedic surgeons should recognize the heightened risk of early implant failure in the absence of osteoporosis therapy. This underscores the imperative for increased screening initiatives given the high prevalence of undiagnosed or untreated osteoporosis in the TSA population. These results also emphasize the importance of integrating osteoporosis management strategies into the broader context of surgical decision-making, thereby contributing to enhanced patient outcomes and quality of care in shoulder surgery., (Copyright © 2024 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Aims & Objectives: This study characterized the independent association between insurance type and healthcare outcomes in patients undergoing total joint arthroplasty (TJA)., Materials &methods: National data identified patients who underwent total hip, knee, shoulder, elbow, ankle or wrist joint arthroplasty surgery from 2012 to 2020 for osteoarthritis. Medicaid, Medicare≥65 years old, Medicare<65 years old, and uninsured patients were matched to privately insured patients based on age, sex, and comorbidities. Multivariable analysis, controlled for various characteristics, was conducted to quantify various outcome measures by payer status., Results: Medicaid patients had greater odds of cardiac, genitourinary, hematoma/hemorrhage/seroma, respiratory, and wound dehiscence complications than privately insured (odds ratio [OR]: 1.5, 1.2, 1.6, 1.3, 1.5, respectively; p < 0.01). Medicare patients ≥65 years old had greater odds of cardiac and wound dehiscence complications but fewer central nervous system and genitourinary complications and post-operative infections than privately insured (OR:1.2, 1.2, 0.3, 0.8, 0.7, respectively; p < 0.01). Medicare<65 years old patients had greater odds of cardiac, gastrointestinal, genitourinary, hematoma/hemorrhage/seroma, post-operative anemia, respiratory, and wound dehiscence complications than privately insured (OR: 1.2, 1.4, 1.2, 1.4, 1.2, 1.7, 1.6, respectively; p < 0.01). Medicare≥65, Medicare<65, and Medicaid patients had $2,243, $3,849, and $1170 more total charges, respectively (p < 0.01)., Conclusion: Despite Medicaid expansion through the 2014 Affordable Care Act, marked disparities in complications after TJA between individuals with and without private insurance still exist. Medicare<65 and Medicaid cohorts demonstrated higher complication rates than private payers, possibly attributable to barriers in healthcare such as patient education, access to healthcare, and social determinants of health., Competing Interests: MB has other financial or non-financial interests in Arthrex, Inc., Smith & Nephew, and Stryker. US reports grants or contracts from Fx Shoulder, Thieme, and Tigon Medical; consulting fees from Tigon Medical and Fx Shoulder; payment or honoraria from Fx Shoulder; board or committee membership at AAOS, American Shoulder and Elbow Surgeons, and IASES; stock or stock options from ROM3, Sonogen, and Tigon Medical; other financial or material support from DePuy, a Johnson & Johnson company; and research support from Fx Shoulder. All other authors have no conflicts to declare., (© 2024 Published by Elsevier B.V. on behalf of Professor P K Surendran Memorial Education Foundation.)

Background: Reverse total shoulder arthroplasty (RTSA) has become an increasingly popular treatment strategy in the management of complex proximal humeral fractures (PHFs). However, no definitive consensus has been reached regarding the optimal surgical timing of RTSA following PHF, particularly considering nonoperative management is often a viable option. Therefore, the aim of this study was (1) to identify optimal timing intervals that maximize the likelihood of revision following RTSA and (2) to determine differences in revision etiologies using the identified timing intervals., Methods: A retrospective cohort analysis of patients undergoing PHF-indicated RTSA from 2010 to 2021 was conducted using a national administrative claims database. Stratum-specific likelihood ratio (SSLR) analysis was conducted to determine data-driven timing strata between PHF and RTSA that maximized the likelihood of revision surgery within 2 years of RTSA. To control for confounders, multivariable regression analysis was conducted to confirm the identified data-driven strata's association with 2-year revision rates as well as compare the likelihood of various indications for revision including mechanical loosening, dislocation, periprosthetic joint infection (PJI), and periprosthetic fracture (PPF)., Results: In total, 11,707 patients undergoing TSA following PHF were included in this study. SSLR analysis identified 2 timing categories: 0-6 weeks and 7-52 weeks from the time of PHF to TSA surgery. Relative to the 0-6-week cohort, the 7-52-week cohort was more likely to undergo revision surgery within 2 years (OR 1.93, P < .001). Moreover, the 7-52-week cohort had significantly higher odds of revision indicated for dislocation (OR 2.24, P < .001), mechanical loosening (OR 1.71, P < .001), PJI (OR 1.74, P < .001), and PPF (OR 1.96, P < .001)., Conclusions: Using SSLR, we were successful in identifying 2 data-driven timing strata between PHF and RTSA that maximized the likelihood of 2-year revision surgery. As it can be difficult to determine whether RTSA or nonoperative management is initially more appropriate, considering the results of this study, an early trial of 4-6 weeks of nonoperative management may be appropriate without altering the risks associated with RTSA., (Copyright © 2024 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Background: Avascular necrosis (AVN) of the humeral head is characterized by osteonecrosis secondary to disrupted blood flow to the glenohumeral joint. Following collapse of the humeral head, arthroplasty, namely, total shoulder arthroplasty (TSA) or humeral head arthroplasty (hemiarthroplasty), is recommended standard of care. The literature is limited to underpowered and small sample sizes in comparing arthroplasty modalities. Therefore, the aims of this study were (1) to compare the 10-year survivorship of TSA and hemiarthroplasty in the treatment of AVN of the humeral head and (2) to identify differences in their revision etiologies., Methods: Patients who underwent primary TSA and hemiarthroplasty for AVN were identified using the PearlDiver database. TSA patients were matched by age, gender, and Charlson Comorbidity Index (CCI) to the hemiarthroplasty cohort in a 4:1 ratio because TSA patients were generally older, sicker, and more often female. The 10-year cumulative incidence rate of all-cause revision was determined using Kaplan-Meier survival analysis. Multivariable analysis was conducted using Cox proportional hazard modeling. χ 2 analysis was conducted to compare the indications for revisions between matched cohorts including periprosthetic joint infection (PJI), dislocation, mechanical loosening, broken implants, periprosthetic fracture, and stiffness., Results: In total, 4825 patients undergoing TSA and 1969 patients undergoing hemiarthroplasty for AVN were included in this study. The unmatched 10-year cumulative incidence of revision for patients who underwent TSA and hemiarthroplasty was 7.0% and 7.7%, respectively. The matched 10-year cumulative incidence of revision for patients who underwent TSA and hemiarthroplasty was 6.7% and 8.0%, respectively. When comparing the unmatched cohorts, TSA patients were at significantly higher risk of 10-year all-cause revision (HR: 1.39; P = .017) when compared to hemiarthroplasty patients. After matching, there was no significant difference in risk of 10-year all-cause revision (HR: 1.29; P = .148) and no difference in the observed etiologies for revision (P > .05 for all)., Conclusion: After controlling for confounders, only 6.7% of TSA and 8.0% hemiarthroplasties for humeral head AVN were revised within 10 years of index surgery. The demonstrated high and comparable long-term survivorship for both modalities supports the utilization of either for the AVN induced humeral head collapse., (Copyright © 2024 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Introduction: Delay in surgical management for orthopaedic emergencies and severe fracture types can result in notable morbidity and even mortality for patients. Disparities in various facets of orthopaedic care have been identified based on race/ethnicity, socioeconomic status, and payer status, but disparities in time to surgery have been poorly explored. The purpose of this study was, therefore, to investigate whether disparities exist in time to emergent orthopaedic surgery., Methods: Patients who underwent surgery for hip fracture, femur fracture, pelvic fracture, septic knee, septic hip, or cauda equina syndrome over 2012 to 2020 were identified using national data. Multivariable linear regression models were constructed, controlling for age, sex, race/ethnicity, payer status, socioeconomic status, hospital setting, and comorbidities to examine the effect of payer status and race/ethnicity, on time to surgery., Results: Over 2012 to 2020, 247,370 patients underwent surgery for hip fracture, 64,827 for femur fracture, 14,130 for pelvic fracture, 14,979 for septic knee, 3,205 for septic hip, and 4,730 for cauda equina syndrome. On multivariable analysis, patients with Medicaid experienced significantly longer time to surgery for hip fracture, femur fracture, pelvic fracture, septic knee, and cauda equina syndrome ( P < 0.05 all). Black patients experienced longer time to surgery for hip fracture, femur fracture, septic knee, septic hip, and cauda equina syndrome, and Hispanic patients experienced longer time to surgery for hip fracture, femur fracture, pelvic fracture, and cauda equina syndrome ( P < 0.05 all)., Discussion: The results of this study demonstrate that Medicaid-insured patients, and often minority patients, experience longer delays to surgery than privately insured and White patients. Future work should endeavor to identify causes of these disparities to promote creation of policies aimed at improving timely access to care for Medicaid-insured and minority patients., Level of Evidence: III., (Copyright © 2024 by the American Academy of Orthopaedic Surgeons.)

Introduction: Total shoulder arthroplasty (TSA) and reverse TSA (rTSA) are successful treatments for end-stage shoulder arthritis. However, it is unknown whether prior arthroscopy is associated with an increased risk for revision surgery. This study investigates if undergoing a shoulder arthroscopy in the year prior to primary arthroplasty increases risk of revision surgery within 2 years., Methods: Patients who underwent TSA or rTSA between 2005 and 2017 were identified in a natinal claims database and stratified into two cohorts: (1) individuals with a history of shoulder arthroscopy prior to arthroplasty and (2) individuals with no documented history of arthroscopy prior to arthroplasty. These cohorts were propensity matched based on demographic and comorbidity factors. Univariate analysis was used to determine differences in revision rates, aseptic loosening, periprosthetic fracture, and infection between the two cohorts., Results: Seven hundred and eighty-eight patients were successfully matched from the two cohorts. Revision surgery (3.4% vs. 1.4%, p  =  0.001) and aseptic loosening (2.2% vs. 0.8% p  =  0.021) were significantly more common in the arthroscopy cohort. Periprosthetic fracture and periprosthetic infection were not found to be significantly different between cohorts., Discussion: Shoulder arthroscopy in the year prior to shoulder arthroplasty is associated with an increased risk of complications, including revision and aseptic loosening., Competing Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2023.)

Patients who sustain fragility fractures prior to total shoulder arthroplasty have significantly higher risk for bone health-related complications within 8 years of procedure. Identification of these high-risk patients with an emphasis on preoperative, intraoperative, and postoperative bone health optimization may help minimize these preventable complications., Purpose: As the population ages, more patients with osteoporosis are undergoing total shoulder arthroplasty (TSA), including those who have sustained a prior fragility fracture. Sustaining a fragility fracture before TSA has been associated with increased risk of short-term revision rates, periprosthetic fracture (PPF), and secondary fragility fractures but long-term implant survivorship in this patient population is unknown. Therefore, the purpose of this study was to characterize the association of prior fragility fractures with 8-year risks of revision TSA, periprosthetic fracture, and secondary fragility fracture., Methods: Patients aged 50 years and older who underwent TSA were identified in a large national database. Patients were stratified based on whether they sustained a fragility fracture within 3 years prior to TSA. Patients who had a prior fragility fracture (7631) were matched 1:1 to patients who did not based on age, gender, Charlson Comorbidity Index (CCI), smoking, obesity, diabetes mellitus, and alcohol use. Kaplan-Meier and Cox Proportional Hazards analyses were used to observe the cumulative incidences of all-cause revision, periprosthetic fracture, and secondary fragility fracture within 8 years of index surgery., Results: The 8-year cumulative incidence of revision TSA (5.7% vs. 4.1%), periprosthetic fracture (3.8% vs. 1.4%), and secondary fragility fracture (46.5% vs. 10.1%) were significantly higher for those who had a prior fragility fracture when compared to those who did not. On multivariable analysis, a prior fragility fracture was associated with higher risks of revision (hazard ratio [HR], 1.48; 95% confidence interval [CI], 1.24-1.74; p < 0.001), periprosthetic fracture (HR, 2.98; 95% CI, 2.18-4.07; p < 0.001) and secondary fragility fracture (HR, 8.39; 95% CI, 7.62-9.24; p < 0.001)., Conclusions: Prior fragility fracture was a significant risk factor for revision, periprosthetic fracture, and secondary fragility fracture within 8 years of primary TSA. Identification of these high-risk patients with an emphasis on preoperative and postoperative bone health optimization may help minimize these complications., Level of Evidence: III., (© 2024. International Osteoporosis Foundation and Bone Health and Osteoporosis Foundation.)

Background: Amidst the rising prevalence of type 2 diabetes mellitus (T2DM) and obesity among individuals undergoing total shoulder arthroplasty (TSA), the impact of glucagon-like peptide-1 (GLP-1) therapy on surgical outcomes merits thorough investigation. Though it is known that GLP-1 therapy poses an interesting challenge for anesthesia during the perioperative period, little is known regarding the effects of these medications on surgical outcomes. This study aimed to evaluate the influence of GLP-1 on postoperative outcomes and length of stay (LOS) in patients T2DM undergoing TSA., Methods: A retrospective cohort analysis was performed using a national database to identify primary TSA patients aged 18 and above with T2DM prescribed GLP-1 therapy at the time of surgery. Exclusion criteria included revision surgery, TSA for fracture, type 1 diabetes, steroid-induced diabetes, and contraindications for GLP-1 therapy. A control group of T2DM TSA patients not on GLP-1 therapy was used, and a 1:4 propensity-score match was performed. Incidence rates and odds ratios via multivariable logistic regression were calculated. The primary outcomes were 90 days major medical complications and LOS. Secondary outcomes included 2-year joint-related complications., Results: In the 90-day follow-up cohort, 64,567 patients met inclusion criteria, with 8481 (13.1%) on GLP-1 therapy. No significant increase in 90 days major complications, including deep vein thrombosis, cardiac arrest, myocardial infarction, cerebrovascular accident, pneumonia, pulmonary embolism, urinary tract infection, surgical site infection, hypoglycemic event, sepsis, or readmission, was found between GLP-1 and non-GLP-1 cohorts after multivariable logistic regression. In the 2-year follow-up cohort, 47,814 patients were included, with 5969 (12.5%) on GLP-1 therapy. Similarly, 2-year joint-related complications, including all-cause revision, prosthetic joint infection, periprosthetic fracture, and aseptic revision, showed no significant differences between the GLP-1 and non-GLP-1 cohorts. No significant difference was observed in LOS in the 90-day cohort., Conclusion: This study provides a comprehensive analysis of GLP-1 therapy's impact on TSA outcomes, revealing no significant change in postoperative complications or LOS. The lack of increased postoperative risk underscores the potential of GLP-1 therapy in managing T2DM without adverse effects on TSA recovery. These insights contribute to understanding postoperative management in orthopedic surgery, indicating that we did not note any increased risk with GLP-1 use perioperatively in TSA patients, unlike in other populations like the total knee arthroplasty patients. Future research should focus on prospective analyses to further elucidate the role of GLP-1 therapy in surgical outcomes, aiming to enhance patient care and optimize postoperative strategies for patients with T2DM undergoing TSA., (Copyright © 2024 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Purpose: Stress shielding in short-stem arthroplasty can cause critical metaphyseal bone loss. If the size and shape of the humeral shaft are important factors, it is unknown whether the shape of the polyethylene component in reverse shoulder arthroplasty (RSA) affects bone stress around or within the stem. We explored the impact of polyethylene shape on humeral and scapular stress distribution using a finite element model., Methods: We developed a shoulder-specific finite element model. A defined set of muscle forces was applied to simulate movements. An intact rotator cuff state and a superior deficient rotator cuff state were modelled. We used the FX V135 short stem in three conditions: total shoulder arthroplasty (TSA), and RSA with symmetrical and asymmetrical polyethylene (145°/135°). We measured biomechanical markers related to bone stress for different implant sizes. Joint kinematics and the mechanical behaviour of the implant were compared., Results: Rupture of the supraspinatus muscle produced a functionally limited shoulder. The placement of an anatomic TSA with an intact rotator cuff restored function similar to that of a healthy shoulder. RSA in the rotator cuff-deficient shoulder restored function regardless of stem size and polyethylene shape. While stem size had an impact on the stress distribution in the bone and implant, it did not show significant potential for increasing or decreasing overall stress. For the same stem, stress distribution at the humerus is different between TSA and RSA. Polyethylene shape did not alter the transmission of stress to the bone in RSA. Asymmetric polyethylene produced a greater abduction range of motion., Conclusions: In terms of bone stress distribution, smaller stems seemed more appropriate for TSA, while larger stems may be more appropriate for RSA. Polyethylene shape resulted in different ranges of motion but did not influence bone stress., Level of Evidence: Diagnostic Tests or Criteria; Level IV., Competing Interests: Geoffroy Nourissat, MD, PhD: Receiving reimbursements, fees, funding, or salary from an organization that may in any way gain or lose financially from the publication of the manuscript, either now or in the future. Victor Housset: Receiving reimbursements, fees, funding, or salary from an organization that may in any way gain or lose financially from the publication of the manuscript, either now or in the future. Jean‐Marie Daudet: Holding stocks or shares in an organization that may in any way gain or lose financially from the publication of the manuscript, either now or in the future. Léo Fradet, PhD, Eng.: Holding stocks or shares in an organization that may in any way gain or lose financially from the publication of the manuscript, either now or in the future. Rohan‐Jean Bianco, PhD.: Holding stocks or shares in an organization that may in any way gain or lose financially from the publication of the manuscript, either now or in the future. Uma Srikumaran, MD: Receiving reimbursements, fees, funding, or salary from an organization that may in any way gain or lose financially from the publication of the manuscript, either now or in the future., (© 2024 The Author(s). Journal of Experimental Orthopaedics published by John Wiley & Sons Ltd on behalf of European Society of Sports Traumatology, Knee Surgery and Arthroscopy.)

Purpose: Our purpose was to quantify stresses in the bone surrounding stemless implants in various configurations., Methods: A detailed finite element model of the glenohumeral joint was used to simulate abduction kinematics before and after arthroplasty and to measure bone stresses around the implants. Two digital patients were simulated: one healthy and one with supraspinatus muscle impairment (deficiency). Two anatomic total shoulder arthroplasty (TSA) configurations were placed in a 135° cutting plane. Two reverse shoulder arthroplasty (RSA) configurations with cutting angles of 135° and 145° were simulated with asymmetrical and symmetrical polyethylene cups, respectively, to obtain humeral neck-shaft angles of 145°., Results: Compared with preoperative models, TSA preserved and RSA restored abduction kinematics. The bone mechanical stresses were located mainly around the central stud of the TSA and were more peripheral to the RSA humeral components. The RSA configuration with the 145° cutting angle and symmetrical cup generated the lowest maximal bone stress and bone volume involvement. Stresses in the scapular cortical bone were highest in the supraspinatus fossa for TSA and the crest of the acromion for RSA., Conclusion: Early stability and glenohumeral bone stress change with implant configuration and should not be extrapolated from anatomic clinical data to reverse configurations., Level of Evidence: Diagnostic tests or criteria; Level IV., Competing Interests: Philomec received financial compensation for their services from FX Shoulder Solutions related to the subject of this article. As a responsible and ethical consulting firm, Philomec has made every effort to maintain the integrity of the article and to avoid any bias that may have been introduced due to this financial relationship. Dr. Umasuthan Srikumaran is a board/committee member of the American Academy of Orthopaedic Surgeons, the American Shoulder and Elbow Surgeon, and the Indian American Shoulder & Elbow Surgeons; holds stock/stock options for ROM3, Sonogen, and Tigon Medical; is a paid consultant for Fx Shoulder and Tigon Medical, receives other financial/material support from Arthrex and DePuy; receives publishing royalties from Thieme; and receives IP royalties from Fx Shoulder and Tigon Medical. The authors declare no conflict of interest., (© 2024 The Author(s). Journal of Experimental Orthopaedics published by John Wiley & Sons Ltd on behalf of European Society of Sports Traumatology, Knee Surgery and Arthroscopy.)

Background: Bovine bioinductive collagen implants (herein, "bovine collagen implant") can be used to augment rotator cuff repair. Concern exists that these bovine collagen implants may not yield clinical benefits and may actually increase postoperative stiffness and the need for reoperation., Questions/purposes: Among patients who underwent primary rotator cuff repair with or without a bovine collagen implant, we asked: (1) Did the proportion of patients undergoing reoperation for postoperative stiffness and inflammation differ between the bovine collagen implant and control groups? (2) Did short-term patient-reported outcomes differ between the two groups? (3) Did the proportion of patients receiving postoperative methylprednisolone prescriptions and corticosteroid injections differ between the two groups?, Methods: We performed a retrospective, matched, comparative study of patients 18 years and older with minimum 2-year follow-up who underwent primary arthroscopic repair of partial or full-thickness rotator cuff tears diagnosed by MRI. All procedures were performed by one surgeonbetween February 2016 and December 2021. During the period in question, this surgeon broadly offered the bovine collagen implant to all patients who underwent rotator cuff repair and who (1) consented to xenograft use and (2) had surgery at a facility where the bovine collagen implant was available. The bovine collagen implant was used in rotator cuff tears of all sizes per the manufacturer's instructions. A total of 312 patients were considered for this study (243 control, 69 implant). Minimum 2-year clinical follow-up data were available for 83% (201 of 243) of patients in the control group and 90% (62 of 69) of patients in the bovine collagen implant group. After we applied the exclusion criteria, 163 control and 47 implant group patients remained and were eligible for matching. Propensity score matching was conducted to balance cohorts by age, gender, race (Black, White, other), ethnicity (Hispanic, non-Hispanic), health insurance status, Area Deprivation Index, BMI, American Society of Anesthesiologists physical status classification, diabetes, smoking, rotator cuff tear size, concomitant surgical procedures, preoperative American Shoulder and Elbow Surgeons (ASES) score, Subjective Shoulder Value (SSV), VAS score for pain, and shoulder ROM. We included 141 patients (47 in the implant group and 94 in the control group) after matching. Patients were categorized according to whether they received the bovine collagen implant. Before matching, the control cohort was older (mean ± SD 57 ± 10 years versus 52 ± 11 years; p = 0.004), more likely to be White (58% versus 23%; p < 0.001), with a smaller proportion of concomitant distal clavicle excisions (43% versus 21%; p = 0.003), and a smaller proportion of "other" concomitant procedures (17% versus 6%; p = 0.011) compared with the implant cohort. After matching, the cohorts were well matched in all demographic variables. The primary study outcome was reoperation for inflammation and stiffness, defined as a failure of nonoperative treatment for a minimum of 9 months, including physical therapy, NSAIDs, at least one course of oral methylprednisolone, and at least one cortisone injection (reoperations for traumatic retears were excluded). Secondary outcomes were patient-reported outcomes (SSV, ASES score, and VAS score for pain), receipt of methylprednisolone prescriptions, and receipt of corticosteroid injections. Chi-square, Fisher exact tests, and independent-samples t-tests were used to assess relationships between treatment group and study outcomes., Results: A greater proportion of patients in the bovine collagen implant group (9% [4 of 47]) underwent reoperation for inflammation and stiffness than in the control group (0% [0 of 94; p = 0.01]). At minimum 2-year follow-up, the cohorts did not differ by ASES score (mean ± SD 81 ± 24 implant versus 85 ±19 control; p = 0.24), SSV (79 ± 24 implant versus 85 ± 18 control; p = 0.30), or VAS score for pain (2.0 ± 2.9 implant versus 1.5 ± 2.3 control; p = 0.11). The cohorts did not differ in the proportion who received postoperative corticosteroid injections (15% implant versus 11% control; p = 0.46) or methylprednisolone prescriptions (49% implant versus 37% control; p = 0.18)., Conclusion: At minimum 2-year follow-up, patients undergoing primary arthroscopic rotator cuff repair with bovine collagen implant augmentation had a greater proportion of reoperation due to inflammation and stiffness compared with patients who did not receive the implant. Furthermore, the implant offered no benefit in patient-reported outcomes or need for postoperative corticosteroid injections or methylprednisolone prescriptions. Because of the lack of clinical benefit and potential increase in postoperative complications, we recommend against the use of these bovine collagen implants unless high-quality randomized controlled trials are able to demonstrate their clinical effectiveness, cost-effectiveness, and overall safety., Level of Evidence: Level III, therapeutic study., Competing Interests: All ICMJE Conflict of Interest Forms for authors and Clinical Orthopaedics and Related Research® editors and board members are on file with the publication and can be viewed on request., (Copyright © 2024 by the Association of Bone and Joint Surgeons.)

Background: Joint hypermobility syndrome (JHS) and Ehlers-Danlos Syndrome (EDS) are connective tissue disorders characterized by increased joint laxity, affecting musculoskeletal health and quality of life. In this study, we explored recent trends in surgical treatment of shoulder instability among patients with these disorders., Methods: We searched the PearlDiver Mariner database, which includes deidentified US all-payer claims data from 2010 to 2020. We used procedure and diagnostic codes for EDS and JHS to select patients. The primary outcome was the yearly trend in relative utilization of the following 4 shoulder instability procedures: arthroscopic stabilization, Latarjet coracoid transfer, open capsulolabral repair, and open capsulolabral shift., Results: Among 109,274 patients with EDS and 453,885 with JHS, 3.4% and 0.8% underwent shoulder instability procedures, respectively. Arthroscopic stabilization was the predominant treatment, with a mean utilization rate of 78% for EDS and 83% for JHS. Notably, the age at surgery increased for EDS patients but decreased for JHS patients. Female patients represented large proportions of those undergoing procedures in both the EDS group (83%) and the JHS group (77%)., Conclusions: Our findings indicate a consistent preference for arthroscopic stabilization in treating shoulder instability in patients with EDS and JHS. The trends in age suggest shifts in treatment strategies, possibly influenced by advancements in nonoperative interventions or varying symptom severity. The higher proportion of female patients aligns with the known prevalence of connective tissue disorders in women. Future research should explore outcomes, complications, and specific EDS subtypes to guide optimal treatment strategies for these challenging connective tissue disorders., (© 2024 Published by Elsevier Inc. on behalf of American Shoulder and Elbow Surgeons.)

Introduction: Total joint arthroplasties (TJAs) have recently been shifting toward outpatient arthroplasty. This study aims to explore recent trends in outpatient total joint arthroplasty (TJA) procedures and examine whether patients with a higher comorbidity burden are undergoing outpatient arthroplasty., Methods: Medicare fee-for-service claims were screened for patients who underwent total hip, knee, or shoulder arthroplasty procedures between January 2019 and December 2022. The procedure was considered to be outpatient if the patient was discharged on the same date of the procedure. The Hierarchical Condition Category Score (HCC) and the Charlson Comorbidity Index (CCI) scores were used to assess patient comorbidity burden. Patient adverse outcomes included all-cause hospital readmission, mortality, and postoperative complications. Logistic regression analyses were used to evaluate if higher HCC/CCI scores were associated with adverse patient outcomes., Results: A total of 69,520, 116,411, and 41,922 respective total knee, hip, and shoulder arthroplasties were identified, respectively. Despite earlier removal from the inpatient-only list, outpatient knee and hip surgical volume did not markedly increase until the pandemic started. By 2022Q4, 16%, 23%, and 36% of hip, knee, and shoulder arthroplasties were discharged on the same day of surgery, respectively. Both HCC and CCI risk scores in outpatients increased over time ( P < 0.001)., Discussion: TJA procedures are shifting toward outpatient surgery over time, largely driven by the COVID-19 pandemic. TJA outpatients' HCC and CCI risk scores increased over this same period, and additional research to determine the effects of this should be pursued., Level of Evidence: Level III, therapeutic retrospective cohort study., (Copyright © 2024 by the American Academy of Orthopaedic Surgeons.)

Introduction: The risks and benefits of including an arthroscopic subacromial decompression (ASD) during arthroscopic rotator cuff repair (RCR) are uncertain. Some studies suggest no difference in revision surgery rates, whereas others have found higher revision surgery rates associated with concomitant ASD. In this study, we compare mid-term revision surgery rates in patients undergoing arthroscopic RCR with or without concomitant ASD., Methods: A retrospective cohort analysis was conducted using a national all-payer claims database. Current Procedural Terminology and International Classification of Disease , 10th Revision , codes were used to identify patients who underwent primary arthroscopic RCR with or without ASD in the United States. The primary study outcome was revision surgery at 2, 4, and 6 years. Univariate analysis was conducted on demographic variables (age, sex) and comorbidities in the Elixhauser Comorbidity Index using chi-square and Student t -tests. Multivariate analysis was conducted using logistic regression., Results: A total of 11,188 patients were identified who underwent RCR and met the inclusion criteria. Of those, 8,994 (80%) underwent concomitant ASD. Concomitant ASD was associated with lower odds of all-cause revision surgery to the ipsilateral shoulder at 2 years (odds ratio [OR], 0.61; 95% confidence interval [CI], 0.51 to 0.73), 4 years (OR, 0.60; 95% CI, 0.51 to 0.70), and 6 years (OR, 0.59; 95% CI, 0.51 to 0.69). Concomitant ASD was also associated with lower odds of revision RCR at 2 years (OR, 0.68; 95% CI, 0.53 to 0.86), 4 years (OR, 0.63; 95% CI, 0.50 to 0.78), and 6 years (OR, 0.61; 95% CI, 0.49 to 0.76)., Discussion: Arthroscopic RCR with concomitant ASD is associated with lower odds of all-cause revision surgery in the ipsilateral shoulder at 2, 4, and 6 years. The lower mid-term revision surgery rates suggest benefits to performing concomitant ASD with primary arthroscopic RCR. Continued research on the mid to long-term benefits of ASD is needed to determine which patient populations benefit most from this procedure., Data Availability: The data that support the findings of this study are available from the corresponding author upon reasonable request., (Copyright © 2024 by the American Academy of Orthopaedic Surgeons.)

Background: Recurrent anterior shoulder instability remains the most common complication from a prior shoulder dislocation, especially among young and active individuals who engage in athletic activities. This instability can lead to repeated subluxation or dislocations of the humeral head from the glenoid fossa. The purpose of this study is to compare postoperative recurrence rates, instability-related revision and return to sport (RTS) rates between isolated arthroscopic Bankart repair (ABR) and ABR with remplissage (ABR + R) for anterior shoulder instability with subcritical glenoid bone loss (GBL) and a Hill-Sachs lesion (HSL)., Methods: PubMed, Embase, and Web of Science were searched on June 2022. Studies sought were those comparing postoperative outcomes of ABR + R versus isolated ABR for subcritical GBL and an HSL. Study quality was evaluated using the revised Cochrane tool. Redislocations, instability-related revisions, and RTS rates were extracted and pooled estimates were calculated using the random-effect model., Results: Twelve studies were included with a mean follow-up of 48.2 months for isolated ABR and 43.2 months for ABR + R. The meta-analytic comparison demonstrated that ABR + R resulted in statistically significant improvement in Rowe and American Shoulder and Elbow Surgeons scores by 6.5 and 2.2 points, respectively; however, the improvements in patient-reported outcomes were not clinically meaningful. ABR + R resulted in reduced external rotation at the side by 1° which was not clinically meaningful and there was no significant difference in terms of forward elevation. ABR + R resulted in a statistically significant reduction of overall postoperative recurrences (odds ratio [OR]: 9.36), postoperative dislocations (OR: 6.28), instability-related revision (OR: 3.46), and RTS to any level (OR: 2.85)., Conclusion: The addition of remplissage to ABR for recurrent anterior shoulder instability with subcritical GBL and HSL results in significantly lower postoperative instability recurrence, lower instability-related revisions, and higher RTS to any level., (Copyright © 2024 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Background: The current literature has differing views on the efficacy of concomitant distal claviculectomy (DC) during rotator cuff repair (RCR) in preventing revision surgery. Our aim was to investigate the revision surgery rate between RCR with DC and RCR without DC., Methods: A retrospective cohort analysis was conducted using a national claims database. Patients undergoing open or arthroscopic primary RCR with or without concomitant DC were identified. The primary outcome was 4-year revision surgery rates. Univariate analysis was conducted using chi-square or Student t tests. Multivariable analysis was conducted using logistic regression, and an adjusted number needed to harm was calculated., Results: A total of 131,232 patients met inclusion criteria. After logistic regression, patients undergoing RCR with DC had higher odds of requiring a subsequent DC procedure [OR; 95% CI; P-value (1.49; 1.35-1.64; P < 0.001)] but lower odds of any revision surgery (0.87; 0.80-0.91; P < 0.001) within 4 years than those who underwent RCR without DC., Conclusion: Although associated with a lower rate of overall revision surgeries within 2 and 4 years of RCR, those who underwent RCR with DC were 85% more likely at 2 years and 49% more likely at 4 years to undergo revision surgery of the distal clavicle than those without concomitant DC., (Copyright © 2024 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Orthopaedic Surgeons.)

Background: Alcohol use disorder (AUD) is the most prevalent substance use disorder in the United States. However, the current literature on AUD as a preoperative risk factor for Total Shoulder Arthroplasty (TSA) outcomes is limited. The purpose of this study was to identify the association of AUD with revision rates and 90-day postoperative complications in TSA., Methods: A retrospective study was conducted using the PearlDiver database. Patients diagnosed with AUD were identified. Patients in remission or with underlying cirrhosis were excluded. Outcomes included 2-year revision, 90-day readmission, 90-day emergency, and 90-day post-operative medical complications. Analysis was performed with univariate chi-squared tests followed by multivariable logistic regression., Results: A total of 59,261 patients who underwent TSA for osteoarthritis were identified, with 1522 patients having a diagnosis of AUD. Multivariable logistic regression showed that patients with AUD were more likely to undergo 2-year all-cause revision (OR = 1.49, p   =  0.007), 2-year aseptic revision (OR = 1.47, p   =  0.014), 90-day hospital readmission (OR = 1.57, p   =  0.015), and 90-day transient mental disorder (OR = 2.13, p   =  0.026)., Conclusions: AUD is associated with increased rates of 2-year revision surgery, as well as 90-day readmission and 90-day transient mental disorder following primary TSA for osteoarthritis. These findings may assist orthopedic surgeons in counseling patients with AUD during the pre-operative course., Competing Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2023.)

Purpose: To evaluate the cost-utility of a balloon spacer implant relative to partial repair (PR) for the surgical treatment of full-thickness massive rotator cuff tears (MRCTs)., Methods: A decision-analytic model comparing balloon spacer with PR was developed using data from a prospective, randomized, single-blinded, multicenter-controlled trial of 184 randomized patients. Our model was constructed on the basis of the various event pathways a patient could have after the procedure. The probability that each patient progressed to a given outcome and the quality-adjusted life years (QALY) associated with each outcome were derived from the clinical trial data. Incremental cost utility ratio (ICUR) and incremental net monetary benefit were calculated on the basis of a probabilistic sensitivity analysis using Monte Carlo simulations of 1,000 hypothetical patients progressing through the decision-analytic model. One-way sensitivity and threshold analyses were performed by varying cost, event probability, and QALY estimates., Results: The balloon spacer had an ICUR of $106,851 (95% confidence interval $96,317-$119,143) relative to PR for surgical treatment of MRCT. Across all patients, the balloon spacer was associated with greater 2-year QALY gain compared with PR (0.20 ± 0.02 for balloon spacer vs 0.18 ± 0.02 for PR), but with substantially greater total 2-year cost ($9,701 ± $939 for balloon spacer vs $6,315 ± $627 for PR). PR was associated with a positive incremental net monetary benefit of $1,802 (95% confidence interval $1,653-$1,951) over balloon spacer at the $50,000/QALY willingness-to-pay threshold., Conclusions: Compared with PR, the balloon spacer is an "intermediate-value" innovation for treatment of MRCT over a 2-year postoperative period with an ICUR value that falls within the $50,000 to $150,000 willingness-to-pay threshold., Level of Evidence: Level III, retrospective comparative study., Competing Interests: Disclosures The authors report no conflicts of interest in the authorship and publication of this article. Full ICMJE author disclosure forms are available for this article online, as supplementary material., (Copyright © 2024 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.)

Purpose: To investigate the efficacy of arthroscopic subacromial balloon placement for massive rotator cuff tear (MRCT), assessing patient satisfaction, outcomes, shoulder functionality, pain scores, and revision-free survivorship up to 8 years after the initial surgery., Methods: In this retrospective study with prospective data collection, patients with MRCTs undergoing balloon placement from 2014 to 2017 were prospectively enrolled. Their outcomes were analyzed retrospectively over a minimum 5-year follow-up. Demographics, patient satisfaction, reoperations, and complications were documented. Minimal clinically important differences were calculated for 12-Item Short Form Health Survey scores and Constant-Murley score subscores. Pre- and postsurgery measures statistically compared for anatomic and functional evaluations., Results: In a study with 61 participants initially, 10 were lost to follow-up over 3 years. Of the remaining 51, 9 were lost at the latest follow-up. The cohort (42 participants, mean age 63.17 ± 7.66 years) was monitored for 83.98 ± 9.50 months. Seven participants required revisions within 2 years, resulting in an 83.33% revision-free survival rate. Significant improvements were observed from preoperative to latest follow-up: acromiohumeral interval decreased (7.83 to 6.56, P = .004), critical shoulder angle increased (36.10 to 38.24, P = .001), osteoarthritis grade increased (1.45 to 2.81, P = .001), 12-Item Short Form Health Survey physical score improved (27.40 to 37.69, P = .001), and Constant-Murley total scores increased (26.50 to 68.69, P = .001). Minimal clinically important difference for total Constant-Murley scores was 11.78 points. Among those without revisions, satisfaction rates were 11.43% excellent, 57.14% satisfied, and 31.43% dissatisfied., Conclusions: Employing a balloon spacer for MRCTs yielded moderate satisfaction at the 5-year follow-up, with stable revision rates within the first 2 years. Notably, low revision surgery rates, high revision-free survival, and significant shoulder functionality improvements were observed at a minimum 5-year follow-up with arthroscopic subacromial balloon placement in conjunction with biceps tenotomy and subacromial bursectomy for MRCT., Level of Evidence: Level IV, retrospective study., Competing Interests: Disclosures The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: U.S. reports: is a board member of the American Academy of Orthopaedic Surgeons, American Shoulder and Elbow Surgeons, and Indian Association of Shoulder & Elbow Surgeons; has received funding grants from Arthrex, DePuy Synthes, Thieme Medical Publishers, FX Solutions, and Tigon Medical; is a consultant or advisor for FX Solutions and Tigon Medical; has received speaking and lecture fees for FX Solutions; has equity or stocks with ROMTech, Sonogen, and Tigon Medical; and has a patent with royalties paid to Fx Shoulder and Tigon Medical. F.F. received financial support from MicroPort Orthopedics and is a consultant or advisor for MicroPort Orthopedics. All other authors (A.K., R.R., S.I.G., S.N., K.T., M.L., E.G., G.G.) declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.)

Background: With the increased utilization of Total Shoulder Arthroplasty (TSA) in the outpatient setting, understanding the risk factors associated with complications and hospital readmissions becomes a more significant consideration. Prior developed assessment metrics in the literature either consisted of hard-to-implement tools or relied on postoperative data to guide decision-making. This study aimed to develop a preoperative risk assessment tool to help predict the risk of hospital readmission and other postoperative adverse outcomes., Methods: We retrospectively evaluated the 2019-2022(Q2) Medicare fee-for-service inpatient and outpatient claims data to identify primary anatomic or reserve TSAs and to predict postoperative adverse outcomes within 90 days postdischarge, including all-cause hospital readmissions, postoperative complications, emergency room visits, and mortality. We screened 108 candidate predictors, including demographics, social determinants of health, TSA indications, prior 12-month hospital, and skilled nursing home admissions, comorbidities measured by hierarchical conditional categories, and prior orthopedic device-related complications. We used two approaches to reduce the number of predictors based on 80% of the data: 1) the Least Absolute Shrinkage and Selection Operator logistic regression and 2) the machine-learning-based cross-validation approach, with the resulting predictor sets being assessed in the remaining 20% of the data. A scoring system was created based on the final regression models' coefficients, and score cutoff points were determined for low, medium, and high-risk patients., Results: A total of 208,634 TSA cases were included. There was a 6.8% hospital readmission rate with 11.2% of cases having at least one postoperative adverse outcome. Fifteen covariates were identified for predicting hospital readmission with the area under the curve of 0.70, and 16 were selected to predict any adverse postoperative outcome (area under the curve = 0.75). The Least Absolute Shrinkage and Selection Operator and machine learning approaches had similar performance. Advanced age and a history of fracture due to orthopedic devices are among the top predictors of hospital readmissions and other adverse outcomes. The score range for hospital readmission and an adverse postoperative outcome was 0 to 48 and 0 to 79, respectively. The cutoff points for the low, medium, and high-risk categories are 0-9, 10-14, ≥15 for hospital readmissions, and 0-11, 12-16, ≥17 for the composite outcome., Conclusion: Based on Medicare fee-for-service claims data, this study presents a preoperative risk stratification tool to assess hospital readmission or adverse surgical outcomes following TSA. Further investigation is warranted to validate these tools in a variety of diverse demographic settings and improve their predictive performance., (Copyright © 2024 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Background: Orthopedic surgeons are the third most frequent prescribers of opioid medications. Given the current opioid addiction crisis, it is critical to limit opioid prescriptions to the lowest effective dose. In this study, we investigated how the initial opioid prescription after shoulder surgery affects maximum possible opioid consumption. We hypothesized that fewer pills in the initial opioid prescription would lead to less opioid consumption, a lower refill request rate, and fewer post-surgery office contacts for pain., Methods: In this single-center, prospective, randomized controlled clinical trial, 74 adults who underwent shoulder arthroplasty, rotator cuff repair, or other arthroscopic shoulder procedures were enrolled from December 2020 to July 2022. Follow-up was completed by February 2023. Participants were randomly assigned to receive postoperative prescriptions of seven 5-mg oxycodone pills (n = 20), 15 pills (n = 29), or 23 pills (n = 25). The primary outcome was maximum possible opioid consumption within 2 weeks after surgery, calculated by assuming consumption of all pills in the initial prescription, as well as any refills. Secondary outcomes were the opioid prescription refill request rates, post-surgery pain-related telephone calls or messages to the provider's office ("office contacts") within 2 weeks after surgery, and American Shoulder and Elbow Surgeons pain scores 2 weeks after surgery. Baseline characteristics did not differ among groups except for mean age, which was younger in the 7-pill group (P = .047)., Results: Maximum possible opioid consumption increased with the number of pills initially prescribed, with means of 78 morphine milligram equivalents (MME) for the 7-pill group, 118 MME for the 15-pill group, and 199 MME for the 23-pill group (P < .001). None of the secondary outcome measures differed among groups. Refill request rates were 20% for the 7-pill group, 3.4% for the 15-pill group, and 12% for the 23-pill group (P = .20). The proportions of patients with at least 1 office contact were 35% in the 7-pill group, 45% in the 15-pill group, and 28% in the 23-pill group (P = .43). Mean American Shoulder and Elbow Surgeons pain scores were 49 in the 7-pill group, 44 in the 15-pill group, and 40 in the 23-pill group (P = .20)., Conclusion: After shoulder surgery, an initial prescription of fewer opioid pills was associated with less maximum possible opioid consumption without an increase in the percentage of patients requesting opioid refills or contacting the provider's office for pain-related concerns. An initial postoperative prescription of fewer 5-mg oxycodone pills may be equally or more effective compared with larger quantities for most patients., (Copyright © 2024 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Background: Body mass index (BMI) is a modifiable risk factor for medical and infectious complications following total shoulder arthroplasty (TSA). Previous studies investigating BMI were limited to the conventional classification system, which may be outdated for modern day patients. Therefore, the purpose of this study was to identify BMI thresholds that are associated with varying risk of 90-day medical complications and 2-year prosthetic joint infection (PJI) following TSA., Methods: A national database was utilized to identify 10,901 patients who underwent primary elective TSA from 2013 to 2022. Patients were only included if they had a BMI value recorded within 1 month prior to TSA. Separate stratum-specific likelihood ratio analyses, an adaptive technique to identify data-driven thresholds, were performed to determine data-driven BMI strata associated with varying risk of 90-day medical complications and 2-year PJI. The incidence rates of these complications were recorded for each stratum. To control for confounders, each BMI strata was propensity-score matched based on age, sex, hypertension, heart failure, chronic obstructive pulmonary disease, and diabetes mellitus to the lowest identified BMI strata for both outcomes of interest. The risk ratio (RR) and 95% confidence interval (CI) were recorded for each matched analysis., Results: The average age and BMI of patients was 70.5 years (standard deviation ±9.8) and 30.7 (standard deviation ±6.2), respectively. Stratum-specific likelihood ratio analysis identified two BMI strata associated with differences in the rate of 2-year PJI: 19-39 and 40+. The same strata were identified for 90-day major complications. When compared to the matched BMI 19-39 cohort, the risk of 2-year PJI was higher in the BMI 40+ cohort (RR: 2.7; 95% CI 1.39-5.29; P = .020). After matching, there was no significant difference in the risk of 90-day major complications between identified strata (RR: 1.19, 95% CI: 0.86-1.64; P = .288)., Conclusion: A data-driven BMI threshold of 40 was associated with a significantly increased risk of 2-year PJI following TSA. This is the first TSA study to observe BMI on a continuum and observe at what point BMI is associated with increased risk of 2-year PJI following TSA. Our identified BMI strata can be incorporated into risk-stratifying models for predicting both PJI and 90-day major complications to minimize both., (Copyright © 2023 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Purpose: An abundance of literature exists linking eating disorders and fracture risk. However, no studies, to our knowledge, have investigated the impact of eating disorders on lower extremity soft tissue injury or surgery risk. The purpose of this study was to determine if anorexia nervosa and bulimia nervosa are associated with prevalence of lower extremity soft tissue injuries and surgeries., Methods: Patients with anorexia nervosa or bulimia nervosa over 2010-2020 were identified through the International Classification of Diseases (ICD) codes in the PearlDiver Claims Database. Patients were matched by age, gender, comorbidities, record dates, and region to control groups without anorexia or bulimia. Soft tissue injuries were identified through ICD codes, and surgeries were identified through Current Procedural Terminology codes. Differences in relative prevalence were analyzed using chi-square analysis., Results: Patients with anorexia had a significantly increased prevalence of meniscus tears (RR = 1.57, CI 1.22-2.03, p  = 0.001) or deltoid ligament sprains (RR = 1.83, CI 1.10-3.03, p  = 0.025), and patients with bulimia had a significantly increased prevalence of meniscus tears (RR = 1.98, CI 1.56-2.51, p  < 0.001), medial collateral ligament sprains (RR = 3.07, CI 1.72-5.48, p  < 0.001), any cruciate ligament tears (RR = 2.14, CI 1.29-3.53, p  = 0.004), unspecified ankle sprains (RR = 1.56, CI 1.22-1.99, p  < 0.001), or any ankle ligament sprains (RR = 1.27, CI 1.07-1.52, p  = 0.008). Patients with anorexia had a significantly increased prevalence of anterior cruciate ligament reconstructions (RR = 2.83, CI 1.12-7.17, p  = 0.037) or any meniscus surgeries (RR = 1.54, CI 1.03-2.29, p  = 0.042), and patients with bulimia had a significantly increased prevalence of partial meniscectomies (RR = 1.80, CI 1.26-2.58, p  = 0.002) or any meniscus surgeries (RR = 1.83, CI 1.29-2.60, p  < 0.001)., Conclusions: Anorexia and bulimia are associated with increased prevalence of soft tissue injuries and surgeries. Orthopedic surgeons should be aware of this risk, and patients presenting to clinics should be informed of the risks associated with these diagnoses and provided with resources promoting recovery to help prevent further injury or surgery.

➤ Hospitalist comanagement of patients undergoing orthopaedic surgery is a growing trend across the United States, yet its implementation in an academic tertiary care hospital can be complex and even contentious.➤ Hospitalist comanagement services lead to better identification of at-risk patients, optimization of patient care to prevent adverse events, and streamlining of the admission process, thereby enhancing the overall service efficiency.➤ A successful hospitalist comanagement service includes the identification of service stakeholders and leaders; frequent consensus meetings; a well-defined standardized framework, with goals, program metrics, and unified commands; and an occasional satisfaction assessment to update and improve the program.➤ In this article, we establish a step-by-step protocol for the implementation of a comanagement structure between orthopaedic and hospitalist services at a tertiary care center, outlining specific protocols and workflows for patient care and transfer procedures among various departments, particularly in emergency and postoperative situations., Competing Interests: Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article ( http://links.lww.com/JBJS/H946 )., (Copyright © 2024 by The Journal of Bone and Joint Surgery, Incorporated.)

Background: To effectively counsel patients prior to shoulder arthroplasty, surgeons should understand the overall life trajectory and life expectancy of patients in the context of the patient's shoulder pathology and medical comorbidities. Such an understanding can influence both operative and nonoperative decision-making and implant choices. This study evaluated 5-year mortality following shoulder arthroplasty in patients ≥65 years old and identified associated risk factors., Methods: We utilized Centers for Medicare & Medicaid Services Fee-for-Service inpatient and outpatient claims data to investigate the 5-year mortality rate following shoulder arthroplasty procedures performed from 2014 to 2016. The impact of patient demographics, including fracture diagnosis, year fixed effects, and state fixed effects; patient comorbidities; and hospital-level characteristics on 5-year mortality rates were assessed with use of a Cox proportional hazards regression model. A p value of <0.05 was considered significant., Results: A total of 108,667 shoulder arthroplasty cases (96,104 nonfracture and 12,563 fracture) were examined. The cohort was 62.7% female and 5.8% non-White and had a mean age at surgery of 74.3 years. The mean 5-year mortality rate was 16.6% across all shoulder arthroplasty cases, 14.9% for nonfracture cases, and 29.9% for fracture cases. The trend toward higher mortality in the fracture group compared with the nonfracture group was sustained throughout the 5-year postoperative period, with a fracture diagnosis being associated with a hazard ratio of 1.63 for mortality (p < 0.001). Medical comorbidities were associated with an increased risk of mortality, with liver disease bearing the highest hazard ratio (3.07; p < 0.001), followed by chronic kidney disease (2.59; p < 0.001), chronic obstructive pulmonary disease (1.92; p < 0.001), and congestive heart failure (1.90; p < 0.001)., Conclusions: The mean 5-year mortality following shoulder arthroplasty was 16.6%. Patients with a fracture diagnosis had a significantly higher 5-year mortality risk (29.9%) than those with a nonfracture diagnosis (14.9%). Medical comorbidities had the greatest impact on mortality risk, with chronic liver and kidney disease being the most noteworthy. This novel longer-term data can help with patient education and risk stratification prior to undergoing shoulder replacement., Level of Evidence: Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence., Competing Interests: Disclosure: No external funding was received for this work. The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJSOA/A622)., (Copyright © 2024 The Authors. Published by The Journal of Bone and Joint Surgery, Incorporated. All rights reserved.)

Background: In January 2021, the US Medicare program approved reimbursement of outpatient total shoulder arthroplasties (TSA), including anatomic and reverse TSAs. It remains unclear whether shifting TSAs from the inpatient to outpatient setting has affected clinical outcomes. Herein, we describe the rate of outpatient TSA growth and compare inpatient and outpatient TSA complications, readmissions, and mortality., Methods: Medicare fee-for-service claims for 2019-2022Q1 were analyzed to identify the trends in outpatient TSAs and to compare 90-day postoperative complications, all-cause hospital readmissions, and mortality between outpatients and inpatients. Outpatient cases were defined as those discharged on the same day of the surgery. To reduce the COVID-19 pandemic's impact and selection bias, we excluded 2020Q2-Q4 data and used propensity scores to match 2021-2022Q1 outpatients with inpatients from the same period (the primary analysis) and from 2019-2020Q1 (the secondary analysis), respectively. We performed both propensity score-matched and -weighted multivariate analyses to compare outcomes between the two groups. Covariates included sociodemographics, preoperative diagnosis, comorbid conditions, the Hierarchical Condition Category risk score, prior year hospital/skilled nursing home admissions, annual surgeon volume, and hospital characteristics., Results: Nationally, the proportion of outpatient TSAs increased from 3% (619) in 2019Q1 to 22% (3456) in 2021Q1 and 38% (6778) in 2022Q1. A total of 55,166 cases were identified for the primary analysis (14,540 outpatients and 40,576 inpatients). Overall, glenohumeral osteoarthritis was the most common indication for surgery (70.8%), followed by rotator cuff pathology (14.6%). The unadjusted rates of complications (1.3 vs 2.4%, P < .001), readmissions (3.7 vs 6.1%, P < .001), and mortality (0.2 vs 0.4%, P = .024) were significantly lower among outpatient TSAs than inpatient TSAs. Using 1:1 nearest matching, 12,703 patient pairs were identified. Propensity score-matched multivariate analyses showed similar rates of postoperative complications, hospital readmissions, and mortality between outpatients and inpatients. Propensity score-weighted multivariate analyses resulted in similar conclusions. The secondary analysis showed a lower hospital readmission rate in outpatients (odds ratio: 0.8, P < .001)., Conclusions: There has been accelerated growth in outpatient TSAs since 2019. Outpatient and inpatient TSAs have similar rates of postoperative complication, hospital readmission, and mortality., (Copyright © 2023 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Introduction: We aimed to use a national database to compare the 4-year revision surgery rates after rotator cuff repair (RCR) in patients with concomitant biceps tenodesis (BT) versus those without BT., Methods: A retrospective cohort analysis was conducted using the PearlDiver database from 2015 to 2017. Patients undergoing primary open and arthroscopic RCR with and without BT were identified. Demographic variables, 90-day complications, and 2- and 4-year revision surgery rates were analyzed, and a multivariable logistic regression was conducted., Results: Of the 131,155 patients undergoing RCR, 24,487 (18.7%) underwent concomitant BT and 106,668 (81.3%) did not. After controlling for comorbidities and demographics, patients with concomitant BT were associated with lower odds of all-cause revision (OR; P-value [0.77; P < 0.001]), revision BT (0.65; P < 0.001), revision RCR (0.72; P < 0.001), and shoulder arthroplasty (0.81; P = 0.001) within 4 years when compared with those without concomitant BT., Discussion: In our analysis, patients undergoing primary RCR with concomitant BT had 35% reduced odds of revision BT and 23% reduced odds of any all-cause revision within 4 years when compared with those without concomitant BT. This suggests that tenodesis at the time of primary RCR may be associated with a reduction in the utilization of ipsilateral shoulder revision surgery rates., (Copyright © 2024 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Orthopaedic Surgeons.)

Background: Body mass index (BMI) has been shown to influence risk for revision total hip arthroplasty (rTHA), but few studies have specifically examined which causes of rTHA are most likely in different BMI classes. We hypothesized that patients in different BMI classes would undergo rTHA for disparate reasons., Methods: Ninety-eight thousand six hundred seventy patients undergoing rTHA over 2006-2020 were identified in the National Inpatient Sample. Patients were classified as underweight, normal-weight, overweight/obese, or morbidly obese. Multivariable logistic regression was used to analyze the impact of BMI on rTHA for periprosthetic joint infection (PJI), dislocation, periprosthetic fracture (PPF), aseptic loosening, or mechanical complications. Analyses were adjusted for age, sex, race/ethnicity, socioeconomic status, insurance, geographic region, and comorbidities., Results: Compared to normal-weight patients, underweight patients were 131% more likely to have a revision due to dislocation and 63% more likely due to PPF. Overweight/obese patients were 19% less likely to have a revision due to dislocation and 10% more likely due to PJI. Cause for revision in morbidly obese patients was 4s1% less likely to be due to dislocation, 8% less likely due to mechanical complications, and 90% more likely due to PJI., Conclusions: Overweight/obese and morbidly obese patients were more likely to undergo rTHA for PJI and less likely for mechanical reasons compared to normal weight patients. Underweight patients were more likely to undergo rTHA for dislocation or PPF. Understanding the differences in cause for rTHA among the BMI classes can aid in patient-specific optimization and management to reduce postoperative complications., Level of Evidence: III., (© 2024. The Author(s).)

Background: Understanding the role of social determinants of health disparities (SDHDs) in surgical outcomes can better prepare providers to improve postoperative care. In this study, we use International Classification of Diseases (ICD) codes to identify SDHDs and investigate the risk of postoperative complication rates among patients undergoing total shoulder arthroplasty (TSA)., Methods: A retrospective cohort analysis was conducted using a national insurance claims database. Using ICD and Current Procedural Terminology (CPT) codes, patients who underwent primary TSA with at least 2 years of follow-up in the database were identified. Patients with a history of SDHDs were identified using appropriate ICD-9 and ICD-10 codes. Patients were grouped in one of 2 cohorts: (1) patients with no history of SDHDs (control) and (2) patients with a history of SDHDs (SDHD group) prior to TSA. The SDHD and control groups were matched 1:1 for comorbidities and demographics prior to conducting multivariable analysis for 90-day medical complications and 2-year surgical complications., Results: After matching, there were 8023 patients in the SDHD group and 8023 patients in the control group. The SDHD group had significantly higher odds for 90-day medical complications including heart failure, cerebrovascular accident, renal failure, deep vein thrombosis, pneumonia, sepsis, and urinary tract infection. Additionally, the SDHD group had significantly higher odds for revision surgery within 2 years following TSA. Patients in the SDHD group also had a significantly longer length of hospital stay following TSA., Discussion: This study highlights the association between SDHDs and postoperative complications following TSA. Quantifying the risk of complications and differences in length of stay for TSA patients with a history of SDHDs is important in determining value-based payment models and risk stratifying to optimize patient care., (Copyright © 2023 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Background: Previous studies have shown that increased 5-item modified frailty index (mFI-5) scores are associated with poor surgical outcomes. This study seeks to determine whether the comorbidities comprising the mFI-5 were correlated with poor outcomes following revision total shoulder arthroplasty (TSA)., Methods: Utilizing the National Surgical Quality Improvement Program database, a mFI-5 score was calculated for all patients 50 years and older who underwent revision TSA between 2013 and 2019. Pearson's Chi-squared tests and multivariable regression analysis were used to evaluate the association of the mFI score with various postoperative complications., Results: Patients with a mFI-5 score of 2+ had significantly increased risk of readmission (OR 2.58), bleeding requiring transfusion (OR 3.66), extended length of stay (OR 2.43), and discharge to a non-home destination (OR 3.22) compared to patients with a mFI-5 score of 0. Relative to patients with a score of 1, those with a mFI-5 score of 2+ had an increased risk of postoperative transfusion (OR 2.46), extended length of stay (OR 2.16), and discharge to a non-home location (OR 2.84)., Discussion: The mFI-5 is a valuable tool that can stratify patients based on risk for postoperative complications following revision TSA., Competing Interests: BTS, TQ, AYZ, and PMP wrote the first draft of the manuscript. All authors reviewed and edited the manuscript and approved the final version of the manuscript. The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2024.)

Background: Body mass index (BMI) impacts risk for revision total knee arthroplasty (rTKA), but the relationship between BMI and cause for revision remains unclear. We hypothesized that patients in different BMI classes would have disparate risk for causes of rTKA., Methods: There were 171,856 patients who underwent rTKA from 2006 to 2020 from a national database. Patients were classified as underweight (BMI < 19), normal-weight, overweight/obese (BMI 25 to 39.9), or morbidly obese (BMI > 40). Multivariable logistic regressions adjusted for age, sex, race/ethnicity, socioeconomic status, payer status, hospital geographic setting, and comorbidities were used to examine the effect of BMI on risk for different rTKA causes., Results: Compared to normal-weight controls, underweight patients were 62% less likely to undergo revision due to aseptic loosening, 40% less likely due to mechanical complications, 187% more likely due to periprosthetic fracture, 135% more likely due to periprosthetic joint infection (PJI). Overweight/obese patients were 25% more likely to undergo revision due to aseptic loosening, 9% more likely due to mechanical complications, 17% less likely due to periprosthetic fracture, and 24% less likely due to PJI. Morbidly obese patients were 20% more likely to undergo revision due to aseptic loosening, 5% more likely due to mechanical complications, and 6% less likely due to PJI., Conclusion: Mechanical reasons were more likely to be the cause of rTKA in overweight/obese and morbidly obese patients, compared to underweight patients, for whom revision was more likely to be infection or fracture related. Increased awareness of these differences may promote patient-specific management to reduce complications., Level of Evidence: III., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Background: Few studies have investigated whether social determinants of health disparities (SDHD), which include economic, social, education, health care, and environmental factors, identified through International Classification of Diseases (ICD) codes are associated with increased odds for poor health outcomes. We aimed to investigate the association between SDHD, identified through this novel methodology, as well as postoperative complications following total knee arthroplasty (TKA)., Methods: Using a national insurance claims database, a retrospective cohort analysis was performed. Patients were selected using Current Procedural Terminology and ICD codes for primary TKA between 2010 and 2019. Patients were stratified into 2 groups using ICD codes, those who had SDHD and those who did not, and propensity matched 1:1 for age, sex, a comorbidity score, and other comorbidities. After matching, 207,844 patients were included, with 103,922 patients in each cohort. Odds ratios (ORs) for 90-day medical and 2-year surgical complications were obtained using multivariable logistical regressions., Results: In patients who have SDHD, multivariable analysis demonstrated higher odds of readmission (OR): 1.12; P = .013) and major and minor medical complications (OR: 2.09; P < .001) within 90-days as well as higher odds of revision surgery (OR: 1.77; P < .001) and periprosthetic joint infection (OR: 1.30; P < .001) within 2-years., Conclusion: The SDHD are an independent risk factor for revision surgery and periprosthetic joint infection after TKA. In addition, SDHD is also an independent risk factor for all-cause hospital readmissions and both minor and major complications., Level of Evidence: III., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Introduction: There has been a trend toward performing arthroplasty in the ambulatory setting. The primary purpose of this study was to compare outpatient and inpatient total shoulder arthroplasties (TSAs) for postoperative medical complications, healthcare utilization outcomes, and surgical outcomes., Methods: Patients who underwent outpatient TSA or inpatient TSA with a minimum 5-year follow-up were identified in the PearlDiver database. These cohorts were propensity-matched based on age, sex, Charlson Comorbidity Index, smoking status, and obesity (body mass index > 30). All outcomes were analyzed using chi square and Student t-tests where appropriate., Results: Outpatient TSA patients had markedly lower rates of various 90-day medical complications. Outpatient TSA patients had lower risk of aseptic loosening at 2 years postoperation and lower risk of periprosthetic joint infection at 5 years postoperation relative to inpatient TSA patients. Outpatient TSA reimbursements were markedly lower than inpatient TSA reimbursements at the 30-day, 90-day, and 1-year postoperative intervals., Conclusion: This study found patients undergoing outpatient TSA to be at lowers odds for both postoperative medical and surgical complications compared with those undergoing inpatient TSA. Despite increased risk of postoperative healthcare utilization for readmissions and emergency department visits, outpatient TSA was markedly less expensive at every postoperative time point assessed., (Copyright © 2023 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Orthopaedic Surgeons.)