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Background: Angiotensin receptor blockers (ARBs) are commonly prescribed antihypertensive agents that have well-known antifibrotic properties. The purpose of this study was to examine the association between ARB use and the rates of new-onset adhesive capsulitis as well as adhesive capsulitis requiring operative treatment., Methods: Using a large national insurance database, a randomly generated cohort of patients with at least 3 continuous months of ARB use between January 2010 and December 2019 (n = 1,000,000) was compared to a separate randomly generated cohort without ARB use (n = 3,000,000). Rates of newly diagnosed adhesive capsulitis and associated manipulation under anesthesia (MUA) and/or arthroscopic capsulotomy were calculated over a 1- and 2-year period following the completion of at least 3 continuous months of ARB therapy. Rates were compared using multivariable logistic regression to control for demographics and comorbidities. Both unadjusted and adjusted odds ratios and 95% confidence intervals were calculated and reported for each comparison. Statistical significance was set at P <.05., Results: The mean age in the ARB cohort was 61.8 years (standard deviation [SD] = 10.0), whereas in the control cohort, it was 54.8 years (SD = 12.3) (P < .001). The ARB cohort had significantly lower rates of newly diagnosed adhesive capsulitis compared with the control cohort at both 1 year (0.15% vs. 0.55%, P < .001) and 2 years (0.3% vs. 0.78%, P < .001). Similar findings were observed for the arthroscopic capsular release/MUA cohort associated with adhesive capsulitis. After adjusting for confounding factors, the lower rates of adhesive capsulitis and arthroscopic capsular release/MUA associated with adhesive capsulitis in the ARB cohort remained statistically significant (P < .001)., Conclusion: Patients prescribed ARBs experienced a decreased rate of newly diagnosed adhesive capsulitis, as well as adhesive capsulitis requiring surgical intervention when compared to a control cohort. These findings suggest a potential protective effect of ARBs against the development of adhesive capsulitis. Further investigations are warranted to elucidate the underlying mechanisms and establish a causal relationship., (Copyright © 2024 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Posterior glenohumeral instability represents a wide spectrum of pathoanatomic processes. A key consideration is the interplay between the posterior capsulolabral complex and the osseous anatomy of the glenoid and humeral head. Stability is dependent upon both the presence of soft tissue pathology (eg, tears to the posteroinferior labrum or posterior band of the inferior glenohumeral ligament, glenoid bone loss, reverse Hill Sachs lesions, and pathologic glenoid retroversion or dysplasia) and dynamic stabilizing forces. This review highlights unique pathoanatomic features of posterior shoulder instability and associated biomechanics that may exist in patients with posterior glenohumeral instability., Competing Interests: Disclosure No relevant disclosures., (Copyright © 2024 Elsevier Inc. All rights reserved.)

» Arthroscopy is used to treat a broad variety of orthopaedic conditions.» The technical aspects of arthroscopic surgery are distinct from traditional open surgery and require different approaches to education and training.» There are neurocognitive concepts related to learning, memory, and performance that are recognized and understood in many fields and relevant but not commonly and specifically considered in orthopaedic surgery.» The purpose of this review was to introduce and discuss neurocognitive principles and concepts of visuospatial motor skill acquisition and proficiency to provide a background to support the development of arthroscopy educational curricula and training., Competing Interests: Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJSREV/B127)., (Copyright © 2024 by The Journal of Bone and Joint Surgery, Incorporated.)

Background: In the continually aging United States population, the number of patients with sarcopenia who undergo shoulder arthroplasty may concomitantly increase. This retrospective cohort study aims to evaluate the rates of short-term implant-related and medical complications following shoulder arthroplasty in patients with and without a recent diagnosis of sarcopenia., Methods: An exact 1:3 matched analysis of 4177 patients was performed using the PearlDiver database. Multivariable logistic regression was used to compare complications, Kaplan-Meier failure analysis was used to compare the cumulative hospital readmission rates. Two-sample T-testing was used to compare the 90-day cost of care., Results: Sarcopenic patients were significantly more likely to experience postoperative shoulder instability (odds ratio (OR) = 2.32, 95% confidence interval (CI), 1.21-4.39) and periprosthetic infection (OR = 3.83, 95% CI, 1.74-8.67) within 1 year of their arthroplasty. Sarcopenic patients were at 25% and 41% greater risk of emergency department presentation and hospital readmission 1-year post-arthroplasty, respectively. Ninty-day total costs were greater among sarcopenics ($16 112.23 vs. 10 679.58, p  < 0.001)., Conclusion: These results are important for orthopaedic surgeons counselling patients with a low muscle mass on the potential for increased complications after undergoing a total shoulder arthroplasty procedure., Competing Interests: The author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: JAA, EJT, and KC declare that there are no conflicting interests. ESP declares the following conflicting interests: AAOS, Board or committee member; American Shoulder and Elbow Surgeons, Board or committee member; Arthrex, Inc: Other financial or material support;Catalyst, Paid consultant; Paid presenter or speaker; Collaborative Approach to Shoulder and Elbow Surgery (CASES), Board or committee member; Journal of Bone and Joint Surgery – American, Editorial or governing board; Miami Device Solutions, Paid consultant; Phoenix Society, Board or committee member; Smith & Nephew, Other financial or material support; Tornier: Other financial or material support, Paid consultant, Paid presenter or speaker; Wright Medical Technology, Inc., Paid consultant, Paid presenter or speaker, all outside submitted work. AHD declares the following conflicting interests: EOS, paid consultant; Orthofix, Inc., paid consultant, research support; SpineArt, paid consultant; Medtronic/Medicrea, paid consultant; Springer: publishing royalties, financial or material support; Stryker: paid consultant, all outside submitted work., (© The Author(s) 2023.)

Purpose: To assess the biomechanical utility of a posterior acromial bone block (PABB) for the treatment of posterior glenohumeral instability., Methods: Ten fresh-frozen cadaveric specimens were obtained based upon an a priori power analysis. A 2.5-cm scapular spine autograft was harvested from all shoulders. A custom robot device was used to apply a 50-N compressive force to the glenohumeral joint. The humeral head was translated 10 mm posteroinferiorly at 30 degrees from the center of the glenoid at a rate of 1.0 mm/s in 6 consecutive conditions: (1) intact specimen, (2) intact with PABB, (3) posterior capsulolabral tear, (4) addition of the PABB, (5) removal of the PABB and repair of the capsulolabral tear (LR), and (6) addition of the PABB with LR. The maximum force required to obtain this translation was recorded. Paired t tests were performed to compare relevant testing conditions., Results: Ten cadavers with a mean ± SD age of 54.4 ± 13.1 years and mean ± SD glenoid retroversion of 6.5 ± 1.0 degrees were studied. The PABB provided greater resistance force to humeral head translation compared to the instability state (instability, 29.3 ± 15.3 N vs PABB, 47.6 ± 21.0 N; P = .001; 95% confidence interval [CI], -27.6 to -10.0). When comparing PABB to LR, the PABB produced higher resistance force than LR alone (PABB, 47.6 ± 21.0 N; LR, 34.2 ± 20.5 N; P = .012; 95% CI, -23.4 to -4.1). An instability lesion treated with the PABB, with LR (P = .056; 95% CI, -0.30 to 20.4) or without LR (P = .351; 95% CI, -6.8 to 15.7), produced resistance forces similar to the intact specimen., Conclusions: A PABB is biomechanically effective at restoring the force required to translate the humeral head posteriorly in a cadaveric, posterior glenohumeral instability model. A posterior acromial bone block is a biomechanically feasible option to consider in patients with recurrent posterior instability., Clinical Relevance: Augmentation of the posterior acromion may be a biomechanically feasible option to treat posterior shoulder instability., Competing Interests: Disclosures The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: B.D.O. is a consultant or advisor for CONMED Corp, Miach, MiTek, and Vericel Corporation; has received funding grants from the Department of Defense, National Institute of Arthritis and Musculoskeletal and Skin Diseases, and US Office of Congressionally Directed Medical Research Programs; and has equity or stock with Vivorte. All other authors (E.J.T., P.M., J.A.A., J.G.L., S.E.M., R.B.) 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.)

Purpose: The purpose of the current study was to evaluate socioeconomic factors affecting whether a patient undergoes rotator cuff repair after a diagnosis of a rotator cuff tear., Methods: From 2009 through 2018, claims for adult (≥18 years of age) patients who were diagnosed with a primary rotator cuff injury were identified in the New York Statewide Planning and Research Cooperative System (SPARCS) database via International Classification of Diseases (ICD)-9th Revision-Clinical Modification (CM) and ICD-10-CM diagnostic codes. SPARCS is a comprehensive all-payer database collecting all inpatient and outpatient pre-adjudicated claims in New York. ICD-9-CM and ICD-10-CM codes were used to identify the initial diagnosis for each patient. Current Procedural Terminology codes were used to identify subsequent rotator cuff surgery. The procedures identified were linked with the initial diagnosis, and patients were noted as either having or not having rotator cuff surgery. Logistic regression analysis was performed for variables including age, sex, race, Social Deprivation Index (SDI), Charlson Comorbidity Index, and primary insurance type to determine the effect of patient factors on the likelihood of having surgery after a diagnosis of rotator cuff injury., Results: Of the 67,584 rotator cuff patients included in the analysis, 19,770 (29.3%) of the patients underwent surgical intervention. From the logistic regression, females relative to males (odds ratio [OR] = 0.798, P < .0001), increased SDI (OR = 0.994, p < .0001), African American compared with White race (OR = 0.694, P < .0001), Asian compared with White (OR = 0.832, P < .0001), Hispanic compared with White (OR = 0.693, P < .0001), other race (OR = 0.58, P < .0001), those with Medicare (OR = 0.601, P < .0001) or Medicaid (OR = 0.614, P < .0001) relative to private insurance, and self-pay relative to private insurance (OR = 0.727, P < .0001) were all associated with decreased odds of undergoing rotator cuff surgery. Older patients (OR = 1.012, P < .0001) and Workers' Compensation relative to private insurance (OR = 1.664, P < .0001) had increased odds of undergoing surgery., Conclusions: The results of the current study identified disparities in the likelihood of undergoing rotator cuff repair after a diagnosis of a rotator cuff tear based on patient demographic and socioeconomic factors. Individuals with higher SDI; African American, Asian, Hispanic, or other non-White races; and those with Medicare, Medicaid, or self-pay insurance had decreased odds of surgery, whereas older age and Workers' Compensation insurance were associated with increased odds of undergoing surgery., Level of Evidence: Level IV, retrospective case series., Competing Interests: Disclosures The authors (M.Q., S.E.M., P.G.B., E.J.T., J.A.G., A.I.C) 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.)

» Testosterone replacement treatment (TRT) and anabolic androgenic steroid (AAS) use is common and possibly increasing.» Diagnosing and treating hypogonadism in men is controversial.» Hypogonadism and the use of AASs seem to have a detrimental effect on the musculoskeletal system. The current literature on TRT and the musculoskeletal system shows an increased risk of tendon injury.» There may be a role for testosterone supplementation in the postoperative period., Competing Interests: Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJSREV/B110)., (Copyright © 2024 by The Journal of Bone and Joint Surgery, Incorporated.)

Background: As the utilization and success of reverse total shoulder arthroplasty (RTSA) have continued to grow, so have its surgical indications. Despite the adoption of RTSA for the treatment of glenohumeral osteoarthritis (GHOA) with an intact rotator cuff and irreparable massive rotator cuff tears (MCTs) without arthritis, the literature remains sparse regarding the differential outcomes after RTSA among these varying indications. Thus, the purpose of this study was to examine the postoperative clinical outcomes of RTSA based on indication., Methods: A retrospective review of 2 large institutional databases was performed to identify all patients who underwent RTSA between 2015 and 2019 with minimum 2-year follow-up. Patients were stratified by indication into 3 cohorts: GHOA, rotator cuff tear arthropathy (CTA), and MCT. Baseline demographic characteristics were collected to determine differences between the 3 cohorts. Clinical outcomes were measured preoperatively and postoperatively, including active range of motion, American Shoulder and Elbow Surgeons (ASES) score, Single Assessment Numeric Evaluation score, and visual analog scale pain score. Multivariate linear regression was performed to determine the factors independently predictive of the postoperative ASES score., Results: A total of 625 patients (383 with GHOA, 164 with CTA, and 78 with MCTs) with a mean follow-up period of 33.4 months were included in the analysis. Patients with GHOA had superior ASES scores (85.6 ± 15.7 vs. 76.6 ± 20.8 in CTA cohort [P < .001] and 75.9 ± 19.9 in MCT cohort [P < .001]), Single Assessment Numeric Evaluation scores (86 ± 20.9 vs. 76.7 ± 24.1 in CTA cohort [P < .001] and 74.2 ± 25.3 in MCT cohort [P < .001]), and visual analog scale pain scores (median [interquartile range], 0.0 [0.0-1.0] vs. 0.0 [0.0-2.0] in CTA cohort [P < .001] and 0.0 [0.0-2.0] in MCT cohort [P < .001]) postoperatively. Postoperative active forward elevation (P < .001) and improvement in active external rotation (P < .001) were greatest in the GHOA cohort compared with other indications. Multivariate linear regression demonstrated that the factors independently associated with the postoperative ASES score included a diagnosis of GHOA (β coefficient, 7.557 [P < .001]), preoperative ASES score (β coefficient, 0.114 [P = .009]), female sex (β coefficient, -4.476 [P = .002]), history of surgery (β coefficient, -3.957 [P = .018]), and postoperative complication (β coefficient, -13.550 [P < .001])., Conclusion: RTSA for the treatment of GHOA generally has superior patient-reported and functional outcomes when compared with CTA and MCTs without arthritis. Long-term follow-up is needed to identify the lasting implications of such outcome differences., (Copyright © 2023 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Background: Infection following surgical fixation of a distal radius fracture can markedly compromise a patient's functional outcome. This study aimed to compare infection rates in pediatric (5-14 years) and adolescent (15-17 years) patients undergoing fixation of a distal radius fracture to a cohort of young adult (18-30 years) patients., Methods: A matched retrospective study was performed using PearlDiver to determine the rates of postoperative infection following distal radius fixation. χ 2 and logistic regression were used to assess differences in rates, while linear regression was used to analyze rates of infection over time., Results: In 32 368 patients, young adults experienced postoperative infection at a significantly increased rate (odds ratio [OR] = 1.81; 95% confidence interval [CI], 1.45-2.27). This trend was consistent among the male (OR = 1.96; 1.49-2.57) and female (OR = 2.11, 1.37-3.27) cohorts. In the multivariate model, the adult cohort remained at increased risk (OR = 1.40; 95% CI, 1.04-1.89), with open fracture (OR = 4.99; 3.55-6.87), smoking (OR = 1.76; 1.22-2.48), hypertension (OR = 1.69; 1.20-2.33), and obesity (OR = 1.37; 1.02, 1.80) identified as other significant risk factors. There was no significant change in the rate of postoperative infections over the 11-year study period., Conclusion: This study demonstrated that although surgical site infections following distal radius fixation are low in patients aged 30 years or younger (0.97%), young adults develop infections at a significantly increased rate. This is important for surgeons to recognize when counseling patients on the risks of surgical fixation., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: J.A.A., O.M., E.R., O.K., and E.J.T. do not report any disclosures. A.H.D. reports disclosures as follows: EOS, paid consultant; Orthofix, Inc., paid consultant, research support; SpineArt, paid consultant; Medtronic/Medicrea, paid consultant; Springer: publishing royalties, financial or material support; Stryker: paid consultant, all outside submitted work. A.I.C. reports disclosures as follows: POSNA, committee board member, PRiSM, committee board member.

Background: Psychiatric comorbidities have been shown to influence outcomes of various orthopedic pathologies. This study aimed to compare rates of delayed scaphoid union and surgical intervention for fractures in patients with and without comorbid psychiatric diagnoses., Methods: A matched retrospective cohort study was performed using the PearlDiver database to determine the association of depression, anxiety, bipolar disorder, and schizophrenia with delayed union rates within 3 and 6 months and rates of nonacute surgical intervention (fixation or grafting) within 6 and 12 months of scaphoid fracture. Analyses were completed using multivariate logistic regression., Results: Among 20 340 patients, a comorbid psychiatric diagnosis was associated with increased rates of delayed scaphoid union at 3 months (odds ratio [OR] = 1.29; 95% confidence interval [CI], 1.14-1.45) and 6 months (OR = 1.23; 95% CI, 1.10-1.38). At 3 months, women with any psychiatric disorder (OR = 1.58; 1.29-1.66), depression (OR = 1.68; 1.31-2.17), and schizophrenia (OR = 5.32; 95% CI, 1.06-26.79) were more likely to experience delayed union, with similar results at 6 months. Men with bipolar disorder experienced increased delayed union rates at 6 months (OR = 1.40; 1.03-1.91). A comorbid psychiatric diagnosis (OR = 1.10; 1.01-1.20) was associated with increased rates of surgical intervention, whereas schizophrenia was associated with decreased rates (OR = 0.58; 0.34-0.99)., Conclusion: Patients with comorbid psychiatric conditions experienced increased rates of delayed scaphoid union. These results underscore the importance of understanding factors that may place patients at risk of impaired recovery., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: JAA, ER, KC, EJT, and JAK do not report any disclosures. AHD reports disclosures as follows: EOS, paid consultant; Orthofix, Inc., paid consultant, research support; SpineArt, paid consultant; Medtronic/Medicrea, paid consultant; Springer: publishing royalties, financial or material support; Stryker: paid consultant, all outside submitted work.

Purpose: To characterize the epidemiology, mechanism (contact vs noncontact), management, and return-to-play (RTP) times for quarterbacks in the National Football League (NFL) who experienced ulnar collateral ligament (UCL) injuries., Methods: Using the Pro Sports Transactions Archive, NFL quarterbacks who sustained UCL injuries between 1991 and 2023 were identified. Age at time of injury, mechanism of injury (contact vs noncontact), management strategy, and RTP time were recorded. In addition, player performance metrics including games played, quarterback rating, completion percentage, touchdowns, and interceptions were examined for the season before injury through the second season after injury. Player performance analysis was assessed using principal component analysis, which is a dimensionality reduction statistical method that compresses the several performance metrics into a single value, the first principal component., Results: A total of 21 injuries in 20 players were identified. The mean age of quarterbacks at time of injury was 28.7 years (± 4.6 years standard deviation). Ten injuries occurred during contact with another player, and 11 injuries were noncontact. Most (n = 13) of UCL injuries were managed nonoperatively. Sixteen players achieved RTP, 4 of whom underwent repair or reconstruction (UCLR). Overall, the mean RTP time was 165.6 days (± 178.8 days standard deviation), but players who underwent UCLR had a longer average RTP time (359.0 days vs 98.25 days, P  = .014). Injuries sustained after 2006 were associated with improved postinjury performance ( P  = .041), but older age at time of injury was associated with diminished postinjury performance ( P  = .048)., Conclusions: NFL quarterbacks sustain more noncontact UCL injuries and are undergoing UCLR at greater rates than previously reported. Although RTP rates are high and players demonstrate improved postinjury performance for injuries sustained after 2006, older age at the time of injury is associated with worse postinjury performance., Level of Evidence: Level IV, therapeutic case series., Competing Interests: 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., (© 2024 The Authors.)

» Posterior glenohumeral instability is relatively uncommon compared with anterior instability, but is becoming an increasingly recognized and surgically managed shoulder pathology.» Soft-tissue stabilization alone may not be sufficient in patients who present with substantial bone loss to the posterior glenoid and/or the anterior humeral head.» For posterior glenoid defects, posterior glenoid osteoarticular augmentation can be used, and posterior glenoid opening wedge osteotomy can be considered in cases of posterior instability with pathologic retroversion.» For humeral head lesions, several surgical treatment options are available including subscapularis transposition into the humeral head defect, autograft or allograft reconstruction, humeral rotation osteotomy, and shoulder arthroplasty., Competing Interests: Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJSREV/B85)., (Copyright © 2024 by The Journal of Bone and Joint Surgery, Incorporated.)

Background: This study aims to characterize the types of procedures performed on patients previously diagnosed with Ehlers-Danlos syndrome (EDS)/hypermobility spectrum disorder (HSD) and investigate rates of revision surgery following open, arthroscopic, or bony stabilization procedures in patients with and without a preoperative diagnosis of EDS/HSD., Methods: This is a retrospective comparative study utilizing a large nationwide claims database. Records were queried between January 2011 and December 2021 for patients undergoing surgical management for glenohumeral instability using Current Procedural Terminology codes. Patients with preoperative diagnoses of EDS/HSD were identified using International Classifications of Disease, ninth revision and tenth revision billing codes. Multivariable logistic regression was used to analyze the distribution of surgical techniques performed for patients with HSD and compare rates of revision operation following open, arthroscopic, and/or bony procedures. Unadjusted and adjusted odds ratios (aOR) and 95% confidence intervals are reported for each comparison. A P value of .05 was used to signify statistical significance., Results: Patients with preoperative diagnoses of EDS/HSD were significantly more likely to undergo open posterior (aOR = 3.47, 95% CI [2.13, 5.31]), open capsulorrhaphy (aOR = 5.04, 95% CI [3.97, 6.32]), and Latarjet (aOR = 1.84, 95% CI [1.33, 2.48]) procedures than patients without EDS/HSD. In contrast, these patients were significantly less likely to undergo arthroscopic Bankart repair (aOR = 0.48, 95% CI [0.40, 0.58]). Preoperative EDS/HSD was also associated with increased rates of secondary shoulder surgery (aOR = 2.63, 95% CI [2.01, 3.39]), but not necessarily ipsilateral revision shoulder surgery (aOR = 1.64, 95% CI [0.89, 2.77], P  = .87)., Conclusions: The present study demonstrates that EDS/HSD results in greater likelihood of shoulder instability being surgically managed through open procedures as opposed to arthroscopic procedures, as well as greater likelihood of requiring subsequent surgical procedures. These findings provide critical insights to patients with EDS/HSD and their clinical providers for developing treatment plans for shoulder instability. Providers should educate patients with known hyperlaxity to make them aware of their increased odds of future reoperation. Surgeons should also prioritize assessment of ligamentous laxity in all patients and adjust individual treatment protocols accordingly., (© 2024 The Authors.)

Background: The cellular mechanisms underlying excess scar tissue formation in arthrofibrosis following total knee arthroplasty (TKA) are well-described. Angiotensin receptor blockers (ARB), particularly losartan, is a commonly prescribed antihypertensive with demonstrated antifibrotic properties. This retrospective study aimed to assess the rates of 1- and 2-year postoperative complications in patients who filled prescriptions for ARBs during the 90 days after TKA., Methods: Patients undergoing primary TKA were selected from a large national insurance database, and the impact of ARB use after TKA on complications was assessed. Of the 1,299,106 patients who underwent TKA, 82,065 had filled at least a 90-day prescription of losartan, valsartan, or olmesartan immediately following their TKA. The rates of manipulation under anesthesia (MUA), arthroscopic lysis of adhesions (LOA), aseptic loosening, periprosthetic fracture, and revision at 1 and 2 years following TKA were analyzed using multivariable logistic regressions to control for various comorbidities., Results: ARB use was associated with decreased rates of MUA (odds ratio [OR] = 0.94, 95% confidence interval (CI), 0.90 to 0.99), arthroscopy/LOA (OR = 0.86, 95% CI, 0.77 to 0.95), aseptic loosening (OR = 0.71, 95% CI, 0.61 to 0.83), periprosthetic fracture (OR = 0.58, 95% CI, 0.46 to 0.71), and revision (OR = 0.79, 95% CI, 0.74 to 0.85) 2 years after TKA., Conclusions: ARB use throughout the 90 days after TKA is associated with a decreased risk of MUA, arthroscopy/LOA, aseptic loosening, periprosthetic fracture, and revision, demonstrating the potential protective abilities of ARBs. Prospective studies evaluating the use of ARBs in patients at risk for postoperative stiffness would be beneficial to further elucidate this association., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Purpose: As high rates of vitamin D deficiency have been demonstrated in orthopedic patient cohorts, this study aimed to characterize the association between a diagnosis of hypovitaminosis D and primary rotator cuff tear (RCT), primary rotator cuff repair (RCR), and postoperative complications in different sex and age cohorts., Methods: In this retrospective cohort study using PearlDiver, a nationwide administrative claims database, records for all patients aged 30 to 89 yr who received a diagnosis of hypovitaminosis D between January 1, 2011, and October 31, 2018, were queried. Rates of primary RCT, primary RCR, and postoperative complications including subsequent surgery were calculated within sex- and age-specific cohorts and compared with matched control cohorts using multivariable logistic regression., Results: Among the 336,320 patients included in the hypovitaminosis D cohort, these patients were significantly more likely to experience an RCT (odds ratio (OR), 2.70; 95% confidence interval (CI), 2.55-2.85) as well as a full-thickness RCT (OR, 2.36; 95% CI, 2.17-2.56) specifically within 2 yr of their diagnosis. Women with hypovitaminosis D were more likely to undergo surgery to address their full-thickness tears (OR, 1.37; 95% CI, 1.09-1.74). There was no difference in the rates of revision RCR or irrigation and debridement. However, women with hypovitaminosis D were significantly more likely to undergo manipulation under anesthesia (OR, 1.16; 95% CI, 1.03-1.31)., Conclusions: Patients diagnosed with hypovitaminosis D were significantly more likely to suffer from a primary RCT and to undergo manipulation under anesthesia within a year of their RCR. Although many risk factors for RCT are unmodifiable, vitamin D deficiency is a readily modifiable risk factor with several treatment regimens demonstrating positive effects on musculoskeletal health., (Copyright © 2023 by the American College of Sports Medicine.)

Context: Collegiate baseball players with professional aspirations often participate in summer leagues; foremost among them is the Cape Cod Baseball League (CCBL). Injuries acquired during the collegiate baseball season can be carried into the CCBL season and vice versa., Objective: To assess the history of throwing arm injury and current functionality in midseason CCBL players., Design: Cross-sectional study., Setting: Online questionnaire., Patients or Other Participants: A total of 123 CCBL players participated. Qualifying athletes were ≥18 years old and were rostered CCBL players with remaining collegiate eligibility., Main Outcome Measure(s): After collecting background information, we used the Kerlan-Jobe Orthopaedic Clinic (KJOC) Shoulder and Elbow questionnaire to assess the history of throwing arm injury and current functionality. The maximum KJOC score is 100.0; higher scores correspond with greater functionality., Results: The mean KJOC score was 86.6 ± 14.5 (n = 92); 24.5% (23/94) of players reported a prior diagnosis of throwing arm injury other than a strain or sprain. A total of 49 (49/96, 51.0%) players had undergone rehabilitation for a throwing arm injury, and 7 (7/96, 7.3%) had experienced a medical procedure. Players with no previous treatment (n = 41, mean KJOC score = 88.9 ± 19.0) more frequently demonstrated KJOC scores of ≥90 than players with such treatment (n = 55, 80.9 ± 17.1; P < .001). The 18 players with time-loss arm injury in the last year had lower mean KJOC scores (71.3 ± 20.0) than players with no injury or time loss (90.3 ± 9.8; P < .001). Similarly, players who reported current arm trouble (n = 15) had lower KJOC scores (71.6 ± 17.5) than players with healthy arms (89.5 ± 11.9; P < .001)., Conclusions: The average KJOC score of the CCBL players was <90, with particularly low scores in athletes with prior arm injury and treatment., (© by the National Athletic Trainers’ Association, Inc.)

» The acromion is a well-studied region of the scapula that has demonstrated substantial relationships to various shoulder pathologies.» Abnormal acromial morphology is associated with rotator cuff pathology, and our understanding of this risk factor inspired acromioplasty as an adjunctive treatment for rotator cuff tears.» The acromion is linked closely to shoulder kinematics and biomechanics, as it serves as the origin for the deltoid muscle.» In degenerative shoulder disease, eccentric glenohumeral osteoarthritis has been associated with a higher, flatter acromial roof.» Increasing literature is emerging connecting morphology of the acromion with shoulder instability., Competing Interests: Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJSREV/B55)., (Copyright © 2024 by The Journal of Bone and Joint Surgery, Incorporated.)

Background: Anabolic steroid use at supraphysiologic doses has been associated with an increased risk of tendon injury. However, the musculoskeletal effects of testosterone therapy in the clinical setting are not well understood., Questions/purposes: (1) Is prescription testosterone associated with a higher odds of subsequent quadriceps muscle or tendon injury? (2) Is prescription testosterone associated with a higher odds of surgical repair of the quadriceps tendon?, Methods: The PearlDiver Database, which contains data on Medicaid, Medicare, and commercially insured patients, allows for a large representative sample of the US population including both publicly and privately insured patients. The database was queried for all patients between 2011 and 2018 who filled a testosterone prescription. Additionally, all quadriceps injuries using ICD-9 and ICD-10 codes between 2011 and 2018 were queried. Propensity score matching based on age, sex, Charlson comorbidity index, and specific comorbidities allowed us to create matched control groups. We used the t-test and chi-square analysis to compare the unmatched and matched cohorts. A total of 151,797 patients (123,627 male patients and 28,170 female patients) with a history of filled testosterone prescriptions were included in the study after matching with the control group, which was of equal size and representation of age, male-female proportions, and comorbidities. Chi-square and logistic regression analyses were performed to compare odds of quadriceps injury and quadriceps tendon repair among the testosterone groups to that of their respective control groups by age and sex., Results: Within 1 year of filling prescriptions for testosterone, 0.06% (97 of 151,797) of patients experienced a quadriceps injury compared with less than 0.01% (18 of 151,797) of patients in the control group (OR 5.4 [95% CI 3.4 to 9.2]; p < 0.001). Within the sex-specific matched groups, filling a testosterone prescription was associated with an increase in the odds of quadriceps injury in male patients within 1 year of the prescription (OR 5.8 [95% CI 3.5 to 10.3]; p < 0.001). Additionally, patients who filled a testosterone prescription were at increased risk of having quadriceps tendon repair within a year of the injury than were patients in the matched control group (OR 4.7 [95% CI 2.0 to 13.8]; p = 0.001)., Conclusion: Considering these findings, it is important for physicians to counsel patients receiving testosterone replacement therapy of the substantially increased odds of quadriceps tendon injury. Future investigations into the mechanisms of influence of exogenous anabolic steroids on tendon injury remains of interest., 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 © 2023 by the Association of Bone and Joint Surgeons.)

Arthroscopy is an orthopaedic technique that provides surgical solutions in a minimally invasive fashion. Since its introduction, arthroscopy has become a preferred surgical approach for treating various orthopaedic pathologies, such as meniscal tears, anterior cruciate ligament ruptures, rotator cuff tears, and wrist, elbow, ankle, and hip conditions. Despite its ubiquity, surgical training in arthroscopy poses several challenges for educators and trainees. Arthroscopy involves neuromotor skills which differ from those of open surgery, such as the principles of triangulation, bimanual dexterity, and the ability to navigate a three-dimensional space on a two-dimensional screen. There remains no universally implemented curriculum for arthroscopic education within orthopaedic residency or fellowship training programs, permitting the potential for highly variable training experiences from institution to institution. Therefore, the current review seeks to highlight the history of arthroscopic education, strategies and current teaching modalities in modern arthroscopic education, and avenues for future educational pathways., Competing Interests: The aforementioned authors report no relevant financial disclosures and/or conflicts of interest in relation to the current manuscript., (Copyright © 2023 by the American Academy of Orthopaedic Surgeons.)

Background: Prescription of testosterone replacement therapy (TRT) has increased in the United States in recent years, and though anabolic steroids have been associated with tendon rupture, there is a paucity of literature evaluating the risk of Achilles tendon injury with TRT. This study aims to evaluate the associative relationship between consistent TRT, Achilles tendon injury, and subsequent surgery., Methods: This is a one-to-one matched retrospective cohort study utilizing the PearlDiver database. Records were queried for patients aged 35-75 who were prescribed at least 3 consecutive months of TRT between January 1, 2010 and December 31, 2019. Achilles tendon injuries and subsequent surgeries were identified using ICD-9, ICD-10, and CPT billing codes. Multivariable logistic regression was used to compare odds of Achilles tendon injury, Achilles tendon surgery, and revision surgery, with a p-value < 0.05 representing statistical significance., Results: A sample of 423,278 patients who filled a TRT prescription for a minimum of 3 consecutive months was analyzed. The 2-year incidence of Achilles tendon injury was 377.8 (95% CI, 364.8-391.0) per 100,000 person-years in the TRT cohort, compared to 245.8 (95% CI, 235.4-256.6) in the control (p < 0.001). The adjusted analysis demonstrated TRT to be associated with a significantly increased likelihood of being diagnosed with Achilles tendon injury (aOR = 1.24, 95% CI, 1.15-1.33, p < 0.001). Of those diagnosed with Achilles tendon injury, 287/3,198 (9.0%) of the TRT cohort subsequently underwent surgery for their injury, compared to 134/2,081 (6.4%) in the control cohort (aOR = 1.54, 95% CI, 1.19-1.99, p < 0.001)., Conclusions: There is a significant association between Achilles tendon injury and prescription TRT, with a concomitantly increased rate of undergoing surgical management. These results provide insight into the risk profile of TRT and further research into the science of tendon pathology in the setting of TRT is an area of continued interest., (© 2023. The Author(s).)

Introduction: Proximal femur fractures have high rates of morbidity, mortality, and perioperative complications. Limiting anesthesia, especially in the elderly population, is a priority from a medical perspective. The goal of the current study is to present a technique of using local anesthetic with monitored anesthesia care (MAC) for the fixation of intertrochanteric (IT) femur fractures with cephalomedullary nailing (CMN), provide early clinical results in a small series of patients, and evaluate the safety, efficiency, and anesthetic efficacy of our technique., Hypothesis: The use of only local anesthetic with MAC for the fixation of IT fractures is safe and leads to decreased operative times when compared to spinal and general anesthesia., Materials and Methods: Patients undergoing cephalomedullary nailing (CMN) with a long nail for IT femur fractures by a single surgeon from January 2020 to June 2021 were identified retrospectively from a prospectively-collected patient registry. Patient demographics, operative time, length of hospital stay, perioperative medication use, and complications were collected. Analysis of variance, Chi 2 , linear regression, and two-sampled T-tests were performed to analyze potential differences between the local anesthesia group and the general or spinal anesthesia group., Results: Thirty-seven patients were identified. Eleven patients underwent CMN using local anesthesia with MAC, 11 using spinal anesthesia, and 15 using general anesthesia. The local anesthesia group demonstrated significantly lower operating room times and anesthesia induction to incision time compared to other anesthesia techniques. The local anesthesia group also trended towards less need for vasopressors during surgery and less postoperative delirium. No differences were identified in intraoperative narcotic use, complications, patient mortality, or hospital readmissions., Conclusions: Local anesthesia with MAC for the treatment of IT fractures with CMN was associated with decreased operating room times and had similar complication rates including blood transfusions, readmissions, and mortalities, when compared to spinal and general anesthesia., Level of Evidence: III, therapeutic., (Copyright © 2023 Elsevier Masson SAS. All rights reserved.)

» The quadriceps tendon (QT) autograft is becoming increasingly popular in both primary and revision anterior cruciate ligament reconstruction (ACLR).» The biomechanical properties of the QT are similar to those of the native ACL, the hamstring tendon (HT), and bone-patellar tendon-bone (BTB) autografts.» QT autograft allows surgeons to be flexible with their graft size and reconstruction technique.» The QT autograft performs in a similar fashion to the BTB and HT autografts, with excellent patient-reported outcomes, consistent postoperative knee stability, and low rates of postoperative complications including graft failure and donor site morbidity.» There are emerging data that the QT autograft is a viable option in revision ACLR., Competing Interests: Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJSREV/B10)., (Copyright © 2023 The Authors. Published by The Journal of Bone and Joint Surgery, Incorporated. All rights reserved.)

Surgical simulation has become a commonly utilized and well-researched training adjunct in nearly all surgical specialties. Balancing high-quality orthopaedic surgical training in the face of work hour restrictions and efficiency pressures has become a challenge to educators and trainees alike. Surgical simulation is an opportunity to enhance such training and potentially permit trainees to be better equipped for the operating room. In orthopaedics, various low-fidelity, high-fidelity, and virtual reality simulation platforms are readily available to almost all trainees and permit simulation of a wide array of arthroscopic surgeries. In this review, we seek to highlight the potential utility of simulation-based training in orthopaedic surgery, the various types of available simulators, and review the evidence for simulator use.

Background: Treatment of glenohumeral osteoarthritis (GHOA) may include conservative management with use of intraarticular injections, prior to considering total shoulder arthroplasty (TSA). The purpose of this study was to assess trends in the use of preoperative cortisone (CO) and hyaluronic acid (HA) injections, as well as investigate the relationship between injection use and infection or revision arthroplasty following TSA., Methods: Pearl Driver was used to identify all patients undergoing TSA for GHOA between 2010 and 2018. Patients were categorized based on the type and number of injections they received. Outcomes of interest included post-operative opioid use, post-operative infection, and risk of revision surgery within 1 year of the index procedure., Results: The incidence of patients receiving a CO or HA injections within 1 year of their TSA decreased by 83% and 54%, respectively. Patients who had received 1 or more steroid injections had higher odds of prolonged opiate use following surgery. Patients that received 1 or 2 CO injection prior to TSA had an increased risk of needing revision surgery., Discussion: Use of intraarticular injections for the management of GHOA has declined. Patients receiving preoperative injections had increased odds of prolonged opiate use and the need for revision surgery., Competing Interests: The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2022.)

Background: Given the prevalence of obesity in the United States, much of the adult reconstruction literature focuses on the effects of obesity and morbid obesity. However, there is little published data on the effect of being underweight on postoperative outcomes. This study aimed to examine the risk of low body mass index (BMI) on complications after total hip arthroplasty (THA)., Methods: A large national database was queried between 2010 and 2020 to identify patients who had THAs. Using International Classification of Disease codes, patients were grouped into the following BMI categories: morbid obesity (BMI>40), obesity (BMI 30 to 40), normal BMI (BMI 20 to 30), and underweight (BMI<20). There were 58,151 patients identified, including 2,484 (4.27%) underweight patients, 34,710 (59.69%) obese patients, and 20,957 (36.04%) morbidly obese patients. Control groups were created for each study group, matching for age, sex, and a comorbidity index. Complications that occurred within 1 year postoperatively were isolated. Subanalyses were performed to compare complications between underweight and obese patients. Statistical analyses were performed using Pearson Chi-squares., Results: Compared to their matched control group, underweight patients showed increased odds of THA revision (Odds Ratio (OR) = 1.32, P = .04), sepsis (OR = 1.51, P = .01), and periprosthetic fractures (OR = 1.63, P = .01). When directly comparing underweight and obese patients (BMI 30 and above), underweight patients had higher odds of aseptic loosening (OR = 1.62, P = .03), sepsis (OR = 1.34, P = .03), dislocation (OR = 1.84, P < .001), and periprosthetic fracture (OR = 1.46, P = .01)., Conclusion: Morbidly obese patients experience the highest odds of complications, although underweight patients also had elevated odds for several complications. Underweight patients are an under-recognized and understudied high risk arthroplasty cohort and further research is needed., (Copyright © 2023 Elsevier Inc. All rights reserved.)

Posterior glenohumeral instability is an increasingly common and challenging orthopaedic problem. While an arthroscopic soft tissue stabilization procedure (i.e., reverse Bankart repair) is effective in treating most cases of posterior instability, this procedure may be inadequate in shoulders with critical posterior glenoid bone loss (GBL), or in cases of an engaging reverse Hill-Sachs lesion. Thus, the purpose of the present manuscript was to report contemporary surgical approaches, techniques, and outcomes for the open treatment of glenoid or humeral head bone loss in posterior instability to help guide clinical decision making. Open osteoarticular augmentation procedures have emerged as a popular option to treat posterior bone loss, with bony auto- and allografts utilized from a variety of donor sites including iliac crest, scapular spine, acromion, distal clavicle, and distal tibia. The combination of glenoid retroversion and bone loss can be addressed with a posterior glenoid opening wedge osteotomy. Bipolar bone loss may be treated with a combination of the aforementioned techniques, in addition to a reverse remplissage, a modified McLaughlin procedure, or various arthroplasty-related options. Although short and mid-term outcomes are dependable, studies reporting long-term outcomes are sparse. Moreover, there is no current consensus regarding the most effective treatment of posterior shoulder instability in the setting of bone loss, and open surgical techniques continue to evolve. Further research is necessary to determine long-term effectiveness of these surgical options., Competing Interests: Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://aoj.amegroups.org/article/view/10.21037/aoj-23-25/coif). The series “Bone Loss in Shoulder Instability and Shoulder Arthroplasty” was commissioned by the editorial office without any funding or sponsorship. BDO reports receiving royalties from Conmed and Linvatec, consulting fees from Conmed, Mitek, Vericel Corp, Miach, Linvatec, DePuy Synthes Products, Musculoskeletal Transplant Foundation, and Medical Device Business Services, honoraria from Vericel and stock options in Vivorte. The authors have no other conflicts of interest to declare., (2023 Annals of Joint. All rights reserved.)

Tears of the gluteus medius and minimus are an important cause of recalcitrant greater trochanteric pain syndrome. Although endoscopic and open abductor repairs have demonstrated promising outcomes, the success of these techniques is dependent on the size of the tear and the quality of the tissue. In patients presenting with abductor insufficiency and evidence of previous repair failure, large retracted tears, muscle atrophy and/or fatty infiltration, reconstruction/augmentation techniques should be considered. In the present study, we present a retrospective cohort study assessing patient outcomes following open gluteus maximus transfer for irreparable or severely retracted gluteus medius tears. Patients were included in the present study if they underwent open gluteus maximus transfer to address hip abductor tears that a senior surgeon deemed irreparable or at high risk for failure following isolated repair secondary to the following tear characteristics: large tears with >2 cm of retraction, the presence of extensive fatty infiltration (Goutallier Grade 3 or greater) and/or patients requiring revision abductor repair due to primary repair failure with associated pain and a Trendelenburg gait. Patients undergoing a concomitant, or those with a previous history of hip arthroplasty, were excluded from the study. All participants were prospectively enrolled in the study, and both pre- and post-operative patient-reported outcomes were collected at 6 months and 1 year including the modified Hip Harris Score, Visual Analog Score, Hip Outcomes Score of Activities Daily Living, Hip Outcomes Score for Sports-Related Activities and Overall Satisfaction with Hip. Pre-operative scores were compared with post-operative assessments using Student's t-test with a significance level of P  < 0.05. Twenty-one patients and 22 hips were included. The average age was 69 (SD ±9.2) and 17 (81%) were females. The average body mass index was 30.0 (±6.2). The outcome scores at both 6 months and 1 year demonstrated significant improvements compared with pre-operative functional assessment. This article reports the utility of gluteus medius/minimus repair augmentation or reconstruction via gluteus maximus transfer demonstrating improvement in patient-reported outcomes at short-term follow-up., Competing Interests: None declared., (© The Author(s) 2023. Published by Oxford University Press.)

Introduction: The purpose of this study was to evaluate rates of rotator cuff tears (RCTs), repairs (RCRs), and revision RCR in patients who were prescribed testosterone replacement therapy (TRT) and compare these patients with a control group., Methods: The PearlDiver database was queried for patients who were prescribed testosterone for at least 90 days between 2011 and 2018 to evaluate the incidence of RCTs in this population. A second analysis evaluated patients who sustained RCTs using International Classification of Diseases, 9th/10th codes to evaluate these patients for rates of RCR and revision RCR. Chi square analysis and multivariate regression analyses were used to compare rates of RCTs, RCR, and subsequent or revision RCR between the testosterone and control groups, with a P -value of 0.05 representing statistical significance., Results: A total of 673,862 patients with RCT were included for analysis, and 9,168 of these patients were prescribed testosterone for at least 90 days before their RCT. The TRT group had a 3.6 times greater risk of sustaining an RCT (1.14% versus 0.19%; adjusted odds ratio (OR) 3.57; 95% confidence interval (CI) 3.57 to 3.96). A 1.6 times greater rate of RCR was observed in the TRT cohort (TRT, 46.4% RCR rate and control, 34.0% RCR rate; adjusted OR 1.60; 95% CI 1.54 to 1.67). The TRT cohort had a 26.7 times greater risk of undergoing a subsequent RCR, irrespective of laterality, within 1 year of undergoing a primary RCR when compared with the control group (TRT, 47.1% and control, 4.0%; adjusted OR 26.4; 95% CI 25.0 to 27.9, P < 0.001)., Conclusions: There is increased risk of RCTs, RCRs, and subsequent RCRs in patients prescribed testosterone. This finding may represent a musculoskeletal consequence of TRT and is important for patients and clinicians to understand. Additional research into the science of tendon injury in the setting of exogenous anabolic steroids remains of interest., Level of Evidence: Level Ⅲ, retrospective cohort study., (Copyright © 2023 by the American Academy of Orthopaedic Surgeons.)

Background: In the United States, the use of testosterone therapy has increased over recent years. Anabolic steroid use has been associated with tendon rupture, although there is a paucity of evidence evaluating the risk of biceps tendon injury (BTI) with testosterone therapy. The aim of this study was to quantify the risk of BTI after the initiation of testosterone therapy., Methods: This was a retrospective cohort study using the PearlDiver database. Records between 2011 and 2018 were queried to identify patients aged 35-75 years who filled a testosterone prescription for a minimum of 3 months. A control group was created, comprising patients aged 35-75 years who had never filled a prescription for exogenous testosterone. International Classification of Diseases, Ninth Revision, International Classification of Diseases, Tenth Revision, and Current Procedural Terminology codes were used to identify patients with distal biceps injuries and those undergoing surgical repair. Three matching processes were completed: one for the overall cohort, one for the cohort comprising only male patients, and one for the cohort comprising only female patients. Each cohort was matched to its control on age, sex, Charlson Comorbidity Index, diabetes, tobacco use, and osteoporosis. Multivariate logistic regression was used to compare rates of distal BTI and subsequent surgical repair in the testosterone groups with their control groups., Results: A total of 776,974 patients had filled a prescription for testosterone for a minimum of 3 consecutive months. In the overall matched analysis between the testosterone and control groups (n = 291,610 in both), the mean age of the patients was 53.9 years and 23.1% were women. Within 1 year of filling exogenous testosterone prescriptions for a minimum of 3 consecutive months, 650 patients experienced a distal BTI compared with 159 patients in the control group (odds ratio [OR], 4.10; 95% confidence interval [CI], 3.45-4.89; P < .001). At any time after testosterone therapy, patients with testosterone use were more than twice as likely to experience a distal BTI as their matched controls (OR, 2.07; 95% CI, 1.94-2.38). Patients who filled prescriptions for testosterone were more likely to undergo surgical repair within a year of the injury compared with the control group. A similar trend was seen in the cohort comprising male patients (OR, 1.63; 95% CI, 1.29-2.07)., Conclusion: Patients with prior prescription testosterone exposure have an increased rate of BTI and biceps tendon repair compared with patients without such exposure. This finding provides insight into the risk profile of testosterone therapy, and doctors should consider counseling patients about this risk, particularly male patients., (Copyright © 2023 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Purpose: To identify the 25 most-cited articles on humeral avulsion of the glenohumeral ligament (HAGL) lesions and characterize them based on number of citations, citation density, source journal, year of publication, geographic origin, article type, and level of evidence., Methods: The Science Citation Index Expanded database was queried for all possible publications regarding HAGL lesions. The 25 most-cited articles from 1976 to 2021 relevant to the topic were selected for further analysis. Articles were characterized based on the number of citations, citation density, year of publication, source journal, country of origin, article type, article subtype, and level of evidence., Results: The number of citations for individual articles ranged from 21 to 182 (mean ± standard deviation: 44.72 ± 36.87). Ten countries contributed to the 25 most cited articles, with 14 of the 25 (56%) articles published in the United States. Furthermore, the top 25 cited articles were published in 9 journals, with the majority in Arthroscopy-The Journal of Arthroscopic and Related Surgery (n = 15, 60%). There were 15 (60%) articles classified as "Clinical," 9 (36%) as "Review/Expert Opinion," and 1 (4%) as "Basic Science." All clinical studies met the standard for level IV evidence., Conclusions: This bibliometric analysis provides a list of the 25 most cited articles related to HAGL lesions, providing a reference of impactful articles for medical educators. The lack of high level of evidence "Clinical" studies demonstrates that higher-quality research is needed to establish guidelines for the treatment and management of HAGL lesions., Clinical Relevance: A list of the 25 most-cited articles regarding recurrent glenohumeral instability can serve as a comprehensive reference for practitioners, educators, researchers, and orthopaedic trainees., (© 2023 The Authors.)

Objectives: The aim of this study was to characterize the case volume dependence of both facilities and surgeons on morbidity and mortality after femoral shaft fracture (FSF) fixation., Methods: Adults who had an open or closed FSF between 2011 and 2015 were identified in the New York Statewide Planning and Research Cooperative System database. Claims were identified by International Classification of Disease-9, Clinical Modification diagnostic codes for a closed or open FSF and International Classification of Disease-9, Clinical Modification procedure codes for FSF fixation. Readmission, in-hospital mortality, and other adverse events were compared across surgeon and facility volumes using multivariable Cox proportional hazards regression, controlling for patient demographic and clinical factors. Surgeon and facility volumes were compared between the lowest and highest 20% to represent low-volume and high-volume surgeons/facilities., Results: Of 4,613 FSF patients identified, 2,824 patients were treated at a high or low-volume facility or by a high or low-volume surgeon. Most of the examined complications including readmission and in-hospital mortality showed no statistically significant differences. Low-volume facilities had a higher 1-month rate of pneumonia. Low-volume surgeons had a lower 3-month rate of pulmonary embolism., Conclusion: There is minimal difference in outcomes in relation to facility or surgeon case volume for FSF fixation. As a staple of orthopaedic trauma care, FSF fixation is a procedure that may not require specialized orthopaedic traumatologists at high-volume facilities., (Copyright © 2023 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Orthopaedic Surgeons.)

Introduction: As rates of anatomic and reverse total shoulder arthroplasty (SA) continue to grow, an increase in the number of osteoporotic patients undergoing SA, including those who have sustained prior fragility fractures, is expected. The purpose of this study was to examine short-term, implant-related complication rates and secondary fragility fractures after SA in patients with and without a history of fragility fractures., Methods: A propensity score-matched retrospective cohort study was done using the PearlDiver database to characterize the effect of antecedent fragility fractures in short-term complications after SA. Rates of revision SA, periprosthetic fractures, infection, and postoperative fragility fractures were evaluated using multivariate logistic regression analysis. Risks of these complications were also studied in patients with and without preoperative osteoporosis treatment. Statistical significance was set at P < 0.05., Results: A total of 91,212 SA patients were identified, with 13,050 (14.3%) experiencing a fragility fracture within the 3 years before SA. Two years after SA, there were increased odds of periprosthetic fracture (odds ratio [OR] 2.24, 95% confidence interval [CI] 1.68 to 2.99), fragility fracture (OR 9.11, 95% CI 8.43 to 9.85), deep infection (OR 1.68, 95% CI 1.34 to 2.12), and all-cause revision SA (OR 1.68, 95% CI 1.44 to 1.96) within those patients who had experienced a fragility fracture within 3 years before their SA. Patients who were treated for osteoporosis with bisphosphonates and/or vitamin D supplementation before their SA had similar rates of postoperative periprosthetic fractures, fragility fractures, and all-cause revision SA to those who did not receive pharmacologic treatment., Conclusion: Sustaining a fragility fracture before SA portends substantial postoperative risk of periprosthetic fractures, infection, subsequent fragility fractures, and all-cause revision SA at the 2-year postoperative period. Pharmacotherapy did not markedly decrease the rate of these complications. These results are important for surgeons counseling patients who have experienced prior fragility fractures on the risks of SA., (Copyright © 2023 by the American Academy of Orthopaedic Surgeons.)

Introduction: The purpose of this study was to compare the hospital course and disposition of COVID-19 positive versus negative patients following an operatively managed hip fracture., Materials and Methods: This retrospective cohort study evaluated patients presenting to a university medical center with a hip fracture who underwent surgical management between February 1, 2020 and April 1, 2021. COVID-19 diagnosis was obtained using PCR testing. Hospital length of stay, disposition, readmission, and mortality were compared between patients with and without COVID-19., Results: 399 total patients were identified who met inclusion criteria, with 14 patients who were COVID-positive (3.1%). There was a 6.1 day increase in length of hospital stay for COVID-19 positive patients compared to those who were COVID negative (p = 0.002), without significant changes in disposition, readmission rates, or mortality., Conclusions: A positive COVID-19 test at the time of admission can significantly increase hospital admission duration., Level of Evidence: III, Retrospective Cohort Study.

Sarcopenia is a state of catabolic muscle wasting prevalent in geriatric patients. Likewise, osteoarthritis is an age-related musculoskeletal disease affecting patients with similar demographics. Late-stage hip osteoarthritis is often treated with total hip arthroplasty (THA). As sarcopenia influences the surgical outcomes, this study aimed to assess the impact of sarcopenia on the outcomes of THA. A 1:3 matched case-control study of sarcopenic to control patients was performed using a large national database. In total, 3992 patients were analyzed. Sarcopenic patients undergoing THA were more likely to experience dislocation (odds ratio (OR) = 2.19, 95% confidence interval (CI) 1.21-3.91) within 1 year of THA. Furthermore, sarcopenic patients had higher urinary tract infection rates (OR = 1.79, CI 1.32-2.42) and a greater risk of 90-day hospital readmission (hazard ratio (HR) = 1.39, CI 1.10-1.77). Sarcopenic patients experienced more falls (OR = 1.62, CI 1.10-2.39) and fragility fractures (OR = 1.77, CI 1.34-2.31). Similarly, sarcopenic patients had higher day of surgery costs (USD 13,534 vs. USD 10,504) and 90-day costs (USD 17,139 vs. USD 13,394) compared with the controls. Ultimately, sarcopenic patients undergoing THA experience higher rates of postoperative complications and incur greater medical costs. Given the potential risks, orthopedic surgeons may consider treating or reducing the severity of sarcopenia before surgery.

Chronic obstructive pulmonary disease (COPD) is a condition which causes a substantial burden to patients, physicians, and the health care system at large. Medical comorbidities are commonly associated with adverse health outcomes in the postoperative period. Here, we present a large database review of patients undergoing total knee arthroplasty (TKA) to determine the effect of COPD on patient outcomes. The PearlDiver database was queried for all patients who underwent TKA between 2007 and the first quarter of 2017. Medical complications, surgical complications, 30-day readmission rates, revision rates, and opioid utilization were assessed at various intervals following TKA among patients with and without COPD. Multivariable regression was used to calculate adjusted odds ratios controlling for age, sex, and medical comorbidities. A total of 46,769 TKA patients with COPD and 120,177 TKA patients without COPD were studied. TKA patients with COPD experienced increased risk of 30-day readmission (40.8% vs. 32.2%, p  < 0.0001), 30-day total medical complications (10.2% vs. 7.0%, p  < 0.0001), prosthesis explanation at 6 months (0.4% vs. 0.2, p  = 0.0130), 1 year (0.6% vs. 0.3%, p  = 0.0005), and 2 years (0.8% vs. 0.5%, p  = 0.0003), as well as an increased rate of revision ( p  < 0.0046) compared to TKA patients without COPD. Opioid utilization of TKA patients with COPD was greater significantly than that of TKA patients without COPD at 3, 6, and 12 months. Patients with COPD have an increased risk for medical and surgical complications, readmission, and prolonged opioid use following TKA., Competing Interests: None declared., (Thieme. All rights reserved.)

Background: With the increasing utilization of total knee arthroplasty (TKA) in a continually aging US population, the number of patients who have low bone mineral density who undergo TKA may concomitantly increase. This study aimed to assess the rates of short-term complications following TKA in patients who did and did not have a recent history of a prior fragility fracture., Methods: A matched retrospective cohort study analyzing 48,796 patients was performed using a national database to determine the impact of a preceding fragility fracture on rates of short-term complications following TKA. The rates of complications at 1 and 2 years post-TKA were analyzed using multivariate logistic regressions., Results: Prior fragility fracture was associated with increased rates of 1-year hospital readmissions (hazard ratio = 1.30, 95% CI, 1.22-1.38), periprosthetic fractures (odds ratio [OR] = 2.72, 95% CI, 1.89-3.99), non-infection-related revisions (OR = 1.32, 95% CI, 1.09-1.60), secondary fragility fractures (OR = 4.62, 95% CI, 4.19-5.12), prosthesis dislocations (OR = 1.76, 95% CI, 1.22-2.56), prosthesis instabilities (OR = 1.64, 95% CI, 1.25-2.15), and periprosthetic infections (OR = 1.49, 95% CI, 1.29-1.71), with similar trends in implant-related complications also seen at the 2-year mark. Patients who filled a prescription for osteoporosis pharmacotherapy had clinically similar rates of these complications compared to those who did not., Conclusion: Sustaining a fragility fracture prior to TKA is associated with an increased risk of hospital readmission and significant implant-related postoperative complications, potentially increasing the morbidity and mortality of TKA in these patients., (Copyright © 2022 Elsevier Inc. All rights reserved.)

Introduction: Anterior cruciate ligament (ACL) injuries may be managed nonoperatively in certain patients and injury patterns; however, complete ACL ruptures are commonly reconstructed to restore anterior and lateral rotatory stability of the knee. While ACL reconstruction is well-studied, the literature is sparse with regard to which socioeconomic patient factors are associated with patients undergoing ACL reconstruction rather than nonoperative management after diagnosis of an ACL injury. The current study seeks to evaluate this relationship between patient demographics as well as socioeconomic factors and the rate of surgery following ACL injuries., Methods: Patients ≤65 years of age with a primary ACL injury between 2011 and 2018 were retrospectively identified in the New York Statewide Planning and Research Cooperative System database. International Classification of Disease 9/10 and Current Procedural Terminology codes were used to identify these patients and their subsequent ACL reconstructions. Logistic regression was performed to determine the effect of patient factors on the likelihood of having surgery after the diagnosis of an ACL injury., Results: Compared to White patients, African American patients were significantly less likely to undergo ACL reconstruction following an ACL injury (OR=0.65, 95% CI, 0.573-0.726). Patients older than 35 had decreased odds of undergoing ACL reconstruction compared to younger patients, with patients 55-64 having the lowest odds (OR=0.166, 95% CI, 0.136-0.203). Patients with Medicaid (OR=0.84, 95% CI, 0.757-0.933) or self-pay insurance (OR=0.67, 95% CI, 0.565-0.793), and those with worker's compensation (OR=0.715, 95% CI, 0.621-0.823) had decreased odds of undergoing ACL reconstruction relative to patients with private insurance. Patients with higher Social Deprivation Index (SDI) were significantly more likely to be treated nonoperatively after ACL injuries compared to those with lower SDI (mean nonoperative SDI score, 61, operative SDI, 56, P<0.0001)., Discussion: In patients with ACL injuries, there are socioeconomic and patient-related factors that are associated with increased odds of undergoing ACL reconstruction. These factors are important to recognize as they represent a source of potential inequality in access to care and an area with potential for improvement., (© 2022. W. Montague Cobb-NMA Health Institute.)

Juxtaphyseal fractures of the distal phalanges of upper extremity digits are most commonly of the Salter-Harris II variety and occur most commonly in the thumb. The diagnosis of this injury is essential as it may present as an open fracture with a nailbed injury ("Seymour fracture"). However, an intra-articular, epiphyseal fracture may also occur and mimic a mallet deformity or Seymour fracture. Prompt diagnosis is essential to rule out an open fracture and obtain anatomical alignment and stability to attempt to reduce complications such as physeal arrest. Here, we present a patient with a displaced Salter-Harris type III fracture of his thumb distal phalanx and review his management and early-term outcome. We present this case to bring attention to this rare and unique injury, review the available literature, and discuss management and outcomes.

Introduction: The purpose of this study was to evaluate the accuracy of visual joint angle assessments by orthopaedic surgery trainees amongst various levels of training., Methods: Sagittal plane photographs of several joints at various angles were distributed to trainees within an orthopaedic residency program. Joint angles were estimated and compared to those obtained with a goniometer. Inter-and intra-rater reliability and ANOVA were conducted to assess differences between groups., Results: Twenty trainees were studied. The percent error for knee measurements differed at 23.1%, 26.2% and 11.1% for the PGY 2-3, PGY 4-5 and PGY 6 groups, respectively (P=0.024). Percentage error for ankles showed the greatest variability at 69.7-96.3%. Intra-rater reliabilities for all visual joint angle assessment were similar amongst groups., Conclusions: Visual joint angle assessments vary amongst trainees, with PGY 6s most accurately identifying knee joint angles. Visual assessment is inaccurate compared to goniometric measurements, thus limiting visual measurements during patient encounters.

Osteoporosis and fragility fractures (FFs) are closely intertwined as the former is a common predisposing factor to the latter. This causal relationship is due to low bone density of osteoporosis and compromised bone microarchitecture, leading to structural failure, decreased ability to withstand applied stresses, and increased propensity to fracture. Osteoporosis can be idiopathic or due to a variety of secondary causes, and numerous treatment strategies are available. FFs are common injuries among the elderly and are caused by factors both intrinsic and extrinsic to the patient. The clinical and economic significances of osteoporosis and FFs are substantial, with considerable associated morbidity and mortality, and billions spent on healthcare expenditures in the US annually. Osteoporosis and FFs are two of the most important topics related to fracture liaison services (FLSs), and their understanding is integral to appreciating the benefits an FLS can provide for patients and providers.

Background: As total shoulder arthroplasty has emerged as the fastest growing joint replacement performed, optimizing surgical efficiency and patient outcomes is essential. The goals of the current study were to identify trends and factors affecting the operative time of total shoulder arthroplasty over a 10-year period., Methods: The National Surgical Quality Improvement Program database was analyzed to determine the operative time and 30-day complications of total shoulder arthroplasty from 2008 to 2018. Factors affecting total shoulder arthroplasty operative time were also assessed. Multivariable linear regression was used to analyze operative time over years studied while controlling for patient demographics and comorbidities., Results: A total of 20,587 total shoulder arthroplasty cases from 2008 to 2018 were included. Mean operative time in 2008 was 139.0 min, while in 2018, mean operative time decreased to 105.6 min (P < .001). Male sex, outpatient surgery, increased body mass index, and low preoperative hematocrit were associated with longer operative times, while elevated international normalized ratio, resident involvement, and elective surgeries were associated with decreased operative duration., Discussion: Operative time for total shoulder arthroplasty has decreased from 2008 to 2018. Patient factors and comorbidities are associated with operative time, and such factors are important to consider in operative planning to ensure appropriate patient and surgeon expectations., Competing Interests: Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© 2021 The British Elbow & Shoulder Society.)

Background: Knee injuries are the most common type of injury seen in the Women's National Basketball Association (WNBA). However, there are sparse epidemiologic data regarding these injuries over the past 20 years., Purpose/hypothesis: The purpose of this study was to determine the prevalence, return to play (RTP) rate/length, and mechanism of knee injuries in the WNBA. We hypothesized that anterior cruciate ligament (ACL) tears would have the highest prevalence and longest RTP times., Study Design: Descriptive epidemiology study., Methods: Publicly available WNBA injury reports were used to find WNBA athletes who sustained knee injuries. The RTP length was determined by calculating the number of days between the date of the injury and the date of the first game they played after returning. The RTP rate was determined by calculating the number of players who returned to play from each injury compared with the total number of each injury. Incidence of knee injuries, frequency, and time to RTP were calculated for each injury. Available videos were analyzed to determine the mechanism and body position at the time of injury., Results: Overall, 99 WNBA players were identified as having sustained a knee injury during the study period resulting in loss of play. ACL tears (n = 37; 37%) were the most devastating injury, resulting in the longest time before RTP (n = 375 days; 70%). The position with the highest incidence of knee injuries was guard, accounting for 53% of knee injuries. Video analysis conducted on 12 knee injuries revealed that such injuries were most commonly noncontact (83%).The mechanisms of injury were most commonly planting (58%) and landing from a jump (33%) with the knee flexed in the valgus position (100%)., Conclusion: Study findings indicated that ACL tears are the most common clinically significant knee injuries sustained in the WNBA, accounting for 37% of total knee injuries with a mean RTP rate of 375 days. The most common mechanism of injury was planting the foot or landing from a jump with a flexed knee in the valgus position. Knee injuries had a high RTP rate in WNBA players but resulted in them missing a significant amount of playing time., Competing Interests: One or more of the authors has declared the following potential conflict of interest or source of funding: B.D.O. has received research support from Arthrex and Mitek; consulting fees from ConMed Linvatec, DePuy/Medical Device Business Systems, Miach, Mitek, Musculoskeletal Transplant Foundation, and Vericel; royalties from ConMed Linvatec, Saunders/Mosby-Elsevier, SLACK, and Springer; honoraria from Vericel; and stock options in Vivorte and is a paid associate editor for The American Journal of Sports Medicine. AOSSM checks author disclosures against the Open Payments Database (OPD). AOSSM has not conducted an independent investigation on the OPD and disclaims any liability or responsibility relating thereto., (© The Author(s) 2022.)

Introduction: This study seeks to evaluate (1) the relationship between hospital and surgeon volumes of shoulder arthroplasty and complication rates and (2) patient demographics/socioeconomic factors that may affect access to high-volume shoulder arthroplasty care., Methods: Adults older than 40 years who underwent shoulder arthroplasty between 2011 and 2015 were identified in the New York Statewide Planning and Research Cooperative System database using International Classification of Disease 9/10 and Current Procedural Terminology codes. Medical/surgical complications were compared across surgeon and facility volumes. The effects of demographic factors were analyzed to determine the relationship between such factors and surgeon/facility volume in shoulder arthroplasty., Results: Seven thousand seven hundred eighty-five patients were included. Older, Hispanic/African American, socially deprived, nonprivately insured patients were more likely to be treated by low-volume facilities. Low-volume facilities had higher rates of readmission, urinary tract infection, renal failure, pneumonia, and cellulitis than high-volume facilities. Low-volume surgeons had patients with longer hospital lengths of stay., Discussion: Important differences in patient socioeconomic factors exist in access to high-volume surgical care in shoulder arthroplasty, with older, minority, and underinsured patients markedly more likely to receive care by low-volume surgeons and facilities. This may highlight an area of potential focus to improve access to high-volume care., (Copyright © 2022 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Orthopaedic Surgeons.)

Socioeconomic status, race, and insurance status are known factors affecting adult orthopaedic surgery care, but little is known about the influence of socioeconomic factors on pediatric orthopaedic care. The purpose of this study was to determine if demographic and socioeconomic related factors were associated with surgical management of pediatric supracondylar humerus fractures (SCHFs) in the inpatient versus outpatient setting. Pediatric patients (<13 years) who underwent surgery for SCHFs were identified in the New York Statewide Planning and Research Cooperative System database from 2009−2017. Inpatient and outpatient claims were identified by International Classification of Diseases-9-Clinical Modification (CM) and ICD-10-CM SCHF diagnosis codes. Claims were then filtered by ICD-9-CM, ICD-10-Procedural Classification System, or Current Procedural Terminology codes to isolate SCHF patients who underwent surgical intervention. Multivariable logistic regression analysis was performed to determine the effect of patient factors on the likelihood of having inpatient management versus outpatient management. A total of 7079 patients were included in the analysis with 4595 (64.9%) receiving inpatient treatment and 2484 (35.1%) receiving outpatient treatment. The logistic regression showed Hispanic (OR: 2.386, p < 0.0001), Asian (OR: 2.159, p < 0.0001) and African American (OR: 2.095, p < 0.0001) patients to have increased odds of inpatient treatment relative to White patients. Injury diagnosis on a weekend had increased odds of inpatient management (OR: 1.863, p = 0.0002). Higher social deprivation was also associated with increased odds of inpatient treatment (OR: 1.004, p < 0.0001). There are disparities among race and socioeconomic status in the surgical setting of SCHF management. Physicians and facilities should be aware of these disparities to optimize patient experience and to allow for equal access to care.

Purpose: To compare the surgical case volume for orthopaedic sports medicine fellows in the most recent classes with one another and in years preceding the pandemic., Methods: The Accreditation Council for Graduate Medical Education case log reports of key procedures for orthopaedic sports medicine fellows during academic years 2018-2019, 2019-2020, and 2020-2021 were extracted. Comparisons between these years in adult, pediatric, and total case volumes were performed using a 2-sample t -test to detect significant changes in the average number of key procedures completed between consecutive years., Results: There was a significant decrease in the total number of cases completed by fellows during the 2020 academic year ( P  = .043) compared with 2019, immediately followed by a significant increase in case volume in 2021 ( P < .001) (2019, 339 ± 123; 2020, 316.2 ± 108; 2021, 356.5 ± 117). There was a significant increase in adult case volume from 2020 to 2021 (2020, 295.7 ± 106; 2021, 332.9 ± 117; P < .001), whereas no trends were noted in pediatric case volume. Between the prepandemic year of 2019 and the first year of the pandemic, significant decreases were noted in case volume for several procedures, including multiligamentous knee injuries, knee instability and pediatric hip arthroscopy. From the first to the second years of the pandemic (2019-2020 to 2020-2021), significant increases were observed in case volume for rotator cuff, acromioclavicular instability, elbow instability, knee cartilage, and meniscal surgeries., Conclusions: Orthopaedic sports medicine fellows experienced significant decreases in volume for several key case categories between the year preceding the coronavirus disease 2019 pandemic and the first academic year during the pandemic. There were subsequent increases in cases between the first year of the pandemic and the second year, which may be associated with resuming elective surgical cases., Level of Evidence: IV, retrospective database analysis., (© 2022 The Authors.)

Background: During the emergence of the SARS-CoV-2 (COVID-19) pandemic, there were substantial changes in U.S. emergency department (ED) volumes and acuity of patient presentation compared with more recent years., Objectives: The purpose of this study was to characterize the incidence of specific lower extremity (LE) injuries presenting to U.S. EDs during the COVID-19 pandemic and to analyze trends across age groups and rates of hospital admission compared with previous years., Methods: The National Electronic Injury Surveillance System database was queried to identify patients who presented to U.S. EDs for a LE orthopedic injury between 2016 and 2020., Results: These queries returned 252,656 cases, representing a total estimate of 9,740,514 injuries presenting to EDs across the United States. The mean incidence of LE orthopedic injuries was 596.8 injuries per 100,000 person-years (95% confidence interval [CI] 594.9-598.7), with the greatest annual decrease in incidence occurring between 2019 and 2020 (24.96%). The largest number of estimated hospital admissions occurred in 2020, with a total 181,671 admissions (95% CI 178,032-185,311), a 25.74% increase from the average number of admissions between 2016 and 2019., Conclusion: The COVID-19 pandemic has placed immense stress on both emergency medical services and hospital systems around the United States. While there were decreased rates of ED utilization for LE orthopedic complaints during the first year of the pandemic, there was a concomitant increase in both the number and proportion of these injuries admitted to the hospital from the ED. This places an additional burden on already stressed emergency medicine services and overall hospital systems that could slow down the management of medical emergencies., (Copyright © 2022. Published by Elsevier Inc.)

Purpose: To assess independent predictors of surgery after an emergency department visit for shoulder instability, including patient-related and socioeconomic factors., Methods: Patients presenting to the emergency department were identified in the New York Statewide Planning and Research Cooperative System database from 2015 to 2018 by International Classification of Diseases, Tenth Revision, Clinical Modification diagnosis codes for anterior shoulder dislocation or subluxation. All shoulder stabilization procedures in the outpatient setting were identified using Current Procedural Terminology codes (23455, 23460, 23462, 23466, and 29806). A multivariable logistic regression was performed to assess the impact of patient factors on the likelihood of receiving surgery. The variables included in the analysis were age, sex, race, social deprivation, Charlson Comorbidity Index, recurrent dislocation, and primary insurance type., Results: In total, 16,721 patients with a shoulder instability diagnosis were included in the analysis and 1,028 (6.1%) went on to have surgery. Patients <18 years old (odds ratio [OR] 8.607, P < .0001), those with recurrent dislocations (OR 2.606, P < .0001), or worker's compensation relative to private insurance (OR 1.318, P  = .0492) had increased odds of receiving surgery. Hispanic (OR 0.711, P  = .003) and African American (OR 0.63, P < .0001) patients had decreased odds of surgery compared with White patients. Patients with Medicaid (OR 0.582, P < .0001) or self-pay (OR 0.352, P < .0001) insurance had decreased odds of undergoing surgery relative to privately insured patients. Patients with greater levels of social deprivation (OR 0.993, P < .0001) also were associated with decreased odds of surgery., Conclusions: Anterior glenohumeral instability and subsequent stabilization surgery is associated with disparities among patient race, primary insurance, and social deprivation., Clinical Relevance: Considering the relationship between differential care and health disparities, it is critical to define and increase physician awareness of these disparities to help ensure equitable care., (© 2022 The Authors.)

Background: Supination adduction ankle fractures are unique among rotational ankle fractures as plate constructs are more commonly used than independent screws for medial malleolar fixation. The purpose of this study was to compare fracture displacement between plate fixation to a novel screw-only construct using a cadaveric biomechanical early-weightbearing model for the treatment of vertical medial malleolus fractures., Methods: Six nonosteoporotic fresh-frozen cadaver shanks and feet in matched pairs underwent a vertical osteotomy of the medial malleolus to simulate the supination adduction type injury. Osteoporosis was measured using DEXA scans. One specimen from each pair was fixed with a one-third tubular buttress plate and the other with screw-only fixation. The specimens were then axially loaded for 100 000 cycles to simulate protected weightbearing, and subsequently loaded to failure in supination. Stiffness, fracture displacement, and load to failure were recorded. Statistical significance was set at P <.05., Results: There were no measurable differences in displacement between the 2 constructs during axial cyclic loading after 100 000 cycles (plate, 0.74 ± 0.09 mm; screws, 0.79 ± 0.18 mm; P = .225). During supination and axial load to failure, the plate outperformed the screw construct. For load to failure (2 mm displacement) at the fracture site, the plate group failed at 716 ± 240 N, whereas the screw group failed at 567 ± 237 N ( P = .015). During load to catastrophic failure, the plate group outperformed the screw group (plate, 6011 ± 1646 N; screws, 4578 ± 1837 N; P = .002)., Conclusion: For vertical medial malleolar fractures, the screw-only construct demonstrated no statistical difference when compared to buttress plating for cyclical axial loading, simulating early weightbearing in a boot. However, buttress plating is 21% to 24% stronger than the screw-only fixation construct in overall strength and prevention of catastrophic failure when loading in a supinated position., Clinical Relevance: The screw-only construct is biomechanically similar to a buttress plate when simulating early protected weightbearing. This suggests that early weightbearing as tolerated in a controlled ankle motion boot beginning 2 weeks postoperatively is mechanically safe for this fracture pattern and does not result in unacceptable amounts of fracture displacement. This construct may be useful as a less invasive treatment modality for the treatment of vertical medial malleolus fractures in select patients.