113 results on '"Bollier, Matthew J"'
Search Results
2. Male Sex, Western Ontario Shoulder Instability Index Score, and Sport as Predictors of Large Labral Tears of the Shoulder: A Multicenter Orthopaedic Outcomes Network (MOON) Shoulder Instability Cohort Study
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Cronin, Kevin J., Magnuson, Justin A., Wolf, Brian R., Hawk, Gregory S., Thompson, Katherine L., Jacobs, Cale A., Hettrich, Carolyn M., Bishop, Julie Y., Bollier, Matthew J., Baumgarten, Keith M., Bravman, Jonathan T., Brophy, Robert H., Cox, Charles L., Feeley, Brian T., Frank, Rachel M., Grant, John A., Jones, Grant L., Kuhn, John E., Ma, C. Benjamin, Marx, Robert G., McCarty, Eric C., Miller, Bruce S., Neviaser, Andrew S., Seidl, Adam J., Smith, Matthew V., Wright, Rick W., and Zhang, Alan L.
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- 2021
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3. Are there racial differences between patients undergoing surgery for shoulder instability? Data from the Multicenter Orthopaedic Outcomes Network (MOON) Shoulder Instability Group
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Baumgarten, Keith M., Bishop, Julie Y., Bollier, Matthew J., Bravman, Jonathan T., Brophy, Robert H., Cox, Charles L., Feeley, Brian T., Grant, John A., Jones, Grant L., Kuhn, John E., Ma, C. Benjamin, Marx, Robert G., McCarty, Eric C., Miller, Bruce S., Neviaser, Andrew S., Seidl, Adam J., Smith, Matthew V., Wright, Rick W., Zhang, Alan L., Hettrich, Carolyn M., Zacharias, Anthony, Ortiz, Shannon F., Westgate, Philip, Wolf, Brian R., and Jacobs, Cale
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- 2021
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4. Estimation of Location and Extent of Labral Tear Based on Preoperative Range of Motion in Patients Undergoing Arthroscopic Stabilization for Anterior Shoulder Instability
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Bollier, Matthew J., Kuhn, John E., Cox, Charles L., Ma, C. Benjamin, Feeley, Brian T., Zhang, Alan L., Seidl, Adam J., Bishop, Julie Y., Jones, Grant L., Barlow, Jonathan D., Brophy, Robert H., Wright, Rick W., Smith, Matthew V., Marx, Robert G., Baumgarten, Keith M., Miller, Bruce S., Carpenter, James E., Grant, John A., Ortiz, Shannon F., Houck, Darby A., Dunn, Robin H., Hettrich, Carolyn M., Wolf, Brian R., Frank, Rachel M., McCarty, Eric C., and Bravman, Jonathan T.
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- 2020
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5. Postoperative Bracing after Medial Patellofemoral Ligament Reconstruction.
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Schaver, Andrew L., Tranovich, Meaghan A., O'Reilly, Olivia C., Bollier, Matthew J., Duchman, Kyle R., Wolf, Brian R., and Westermann, Robert W.
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- 2024
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6. HEALTH LITERACY IN SHOULDER ARTHROSCOPY: A QUANTITATIVE ASSESSMENT OF THE UNDERSTANDABILITY AND READABILITY OF ONLINE PATIENT EDUCATION MATERIAL.
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O'Reilly, Olivia C., Skalitzky, Mary K., Kesler, Kyle K., Shamrock, Alan G., Gao, Burke, Gulbrandsen, Trevor R., and Bollier, Matthew J.
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- 2024
7. Surgical outcomes in the Frequency, Etiology, Direction, and Severity (FEDS) classification system for shoulder instability
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Baumgarten, Keith M., Bishop, Julie Y., Bollier, Matthew J., Bravman, Jonathan T., Brophy, Robert H., Cox, Charles L., Feeley, Brian T., Grant, John A., Jones, Grant L., Ma, C. Benjamin, Marx, Robert G., McCarty, Eric C., Miller, Bruce S., Smith, Matthew V., Wright, Rick W., Zhang, Alan L., Magnuson, Justin A., Wolf, Brian R., Cronin, Kevin J., Jacobs, Cale A., Ortiz, Shannon F., Kuhn, John E., and Hettrich, Carolyn M.
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- 2020
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8. Preoperative Validation of the Patient-Reported Outcomes Measurement Information System in Patients With Articular Cartilage Defects of the Knee
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Shamrock, Alan G., Wolf, Brian R., Ortiz, Shannon F., Duchman, Kyle R., Bollier, Matthew J., Carender, Christopher N., and Westermann, Robert W.
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- 2020
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9. Sex-related differences in patients undergoing surgery for shoulder instability: a Multicenter Orthopaedic Outcomes Network (MOON) Shoulder Instability cohort study
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Bollier, Matthew J., Bravman, Jonathan T., Brophy, Robert H., Cox, Charles L., Feeley, Brian T., Grant, John A., Jones, Grant L., Kuhn, John E., Ma, C. Benjamin, Marx, Robert G., McCarty, Eric C., Miller, Bruce S., Seidl, Adam J., Smith, Matthew V., Wright, Rick W., Zhang, Alan L., Magnuson, Justin A., Wolf, Brian R., Cronin, Kevin J., Jacobs, Cale A., Ortiz, Shannon F., Bishop, Julie Y., Baumgarten, Keith M., and Hettrich, Carolyn M.
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- 2019
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10. Surgical stabilization for first-time shoulder dislocators: a multicenter analysis
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Baumgarten, Keith M., Bishop, Julie Y., Bollier, Matthew J., Bravman, Jonathan T., Brophy, Robert, Carpenter, James, Cox, Charlie L., Feeley, Brian T., Grant, John A., Jones, Grant L., Kuhn, John E., Ma, C. Benjamin, Marx, Robert G., McCarty, Eric, Miller, Bruce S., Smith, Matthew V., Wright, Rick W., Rugg, Caitlin M., Hettrich, Carolyn M., Ortiz, Shannon, Wolf, Brian R., and Zhang, Alan L.
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- 2018
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11. The incidence and clinical outcomes of peroneal nerve injuries associated with posterolateral corner injuries of the knee
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Ridley, T. J., McCarthy, Mark A., Bollier, Matthew J., Wolf, Brian R., and Amendola, Annunziato
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- 2018
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12. Factors Associated With Humeral Avulsion of Glenohumeral Ligament Lesions in Patients With Anterior Shoulder Instability: An Analysis of the MOON Shoulder Instability Cohort.
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Freshman, Ryan D., Zhang, Alan L., Benjamin Ma, C., Feeley, Brian T., Ortiz, Shannon, Patel, Jhillika, Dunn, Warren, Wolf, Brian R., Hettrich, Carolyn, Lansdown, Drew, Baumgarten, Keith M., Bishop, Julie Y., Bollier, Matthew J., Brophy, Robert H., Bravman, Jonathan T., Cox, Charles L., Cvetanovich, Gregory L., Grant, John A., Frank, Rachel M., and Jones, Grant L.
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- 2023
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13. Development and Validation of a Short-Form Version of the Western Ontario Shoulder Instability Scale (Short-WOSI).
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Jacobs, Cale A., Ortiz, Shannon F., Baumgarten, Keith M., Bishop, Julie Y., Bollier, Matthew J., Bravman, Jonathan T., Brophy, Robert H., Cvetanovich, Gregory L., Feeley, Brian T., Frank, Rachel M., Jones, Grant L., Kuhn, John E., Lansdown, Drew A., Ma, C. Benjamin, Mair, Scott D., Marx, Robert G., McCarty, Eric C., Seidl, Adam J., Wright, Rick W., and Zhang, Alan L.
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EXPERIMENTAL design ,SHOULDER joint ,RESEARCH evaluation ,RESEARCH methodology ,RESEARCH methodology evaluation ,JOINT instability ,CRONBACH'S alpha ,MULTITRAIT multimethod techniques ,REOPERATION ,FACTOR analysis ,DESCRIPTIVE statistics ,BODY mass index ,LONGITUDINAL method ,SECONDARY analysis - Abstract
Background: Patient-reported outcome measures (PROMs) have transitioned from primarily being used as research instruments to becoming increasingly used in the clinical setting to assess recovery and inform shared decision-making. However, there is a need to develop validated short-form PROM instruments to decrease patient burden and ease incorporation into clinical practice. Purpose: To assess the validity and responsiveness of a shortened version of the Western Ontario Shoulder Instability Index (Short-WOSI) when compared with the full WOSI and other shoulder-related PROM instruments. Study Design: Cohort study (diagnosis); Level of evidence, 2. Methods: This study was a secondary analysis of data collected as part of an institutional review board–approved, multicenter cohort of 1160 patients undergoing surgical stabilization for shoulder instability. The following PROMs were captured preoperatively and 2 years after surgery: WOSI, American Shoulder and Elbow Surgeons (ASES) score, the Single Assessment Numeric Evaluation (SANE), and 36-Item Health Survey (RAND-36). The cohort was split into 2 data sets: a training set to be used in the development of the Short-WOSI (n = 580) and a test set to be used to assess the validity and responsiveness of the Short-WOSI relative to the full WOSI, ASES, SANE, and RAND-36. Results: The Short-WOSI demonstrated excellent internal consistency before surgery (Cronbach α =.83) and excellent internal consistency at the 2-year follow-up (Cronbach α =.93). The baseline, 2-year, and pre- to postoperative changes in Short-WOSI and WOSI were closely correlated (r > 0.90), with both demonstrating large effect sizes (Short-WOSI = 1.92, WOSI = 1.81). Neither the Short-WOSI nor the WOSI correlated well with the other PROM instruments before (r = 0.21-0.33) or after (r = 0.25-0.38) surgery. The Short-WOSI, WOSI, and SANE scores were more responsive than ASES and RAND-36 scores. Conclusion: The 7-item Short-WOSI demonstrated excellent internal consistency and a lack of floor or ceiling effects. The Short-WOSI demonstrated excellent cross-sectional and longitudinal construct validity and was similarly responsive over time as the full WOSI. Neither the Short-WOSI nor WOSI correlated with more general shoulder PROMs, underscoring the advantage of using instability-specific instruments for this population. [ABSTRACT FROM AUTHOR]
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- 2023
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14. Outcomes Following Primary Anterior Cruciate Ligament Reconstruction Using a Partial Transphyseal (Over-the-Top) Technique in Skeletally Immature Patients
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Shamrock, Alan G., Duchman, Kyle R., Cates, William T., Cates, Robert A., Khazi, Zain M., Westermann, Robert W., Bollier, Matthew J., and Wolf, Brian R.
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Male ,Adolescent ,Anterior Cruciate Ligament Reconstruction ,Tibia ,Anterior Cruciate Ligament Injuries ,Humans ,Female ,Anterior Cruciate Ligament ,Sports Medicine ,Child ,Retrospective Studies - Abstract
BACKGROUND: The incidence of anterior cruciate ligament (ACL) injuries in skeletally immature patients is increasing, with ACL reconstruction preferred in this population due to reported chondroprotective benefits. Due to concerns with growth disturbance following ACL reconstruction in skeletally immature patients, various physealsparing and partial transphyseal techniques have been developed. Currently, there is no consensus on the most effective ACL reconstruction technique in skeletally immature patients. The purpose of the current study was to report the outcomes of a partial-transphyseal over-the-top (OTT) ACL reconstruction in a cohort of skeletally immature patients. METHODS: All patients with radiographic evidence of open tibial and femoral physes that underwent primary ACL reconstruction using a partial-transphyseal OTT technique between 2009-2018 at a single tertiary-care institution with at least twelve months of clinical follow-up were retrospectively reviewed. Patient demographics, physical examination findings, graft ruptures, return to sport, and Tegner activity levels were analyzed. Statistical significance was defined as p
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- 2022
15. Complications of Medial Patellofemoral Ligament Reconstruction: Common Technical Errors and Factors for Success: AAOS Exhibit Selection
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Tanaka, Miho J, Bollier, Matthew J, Andrish, Jack T, Fulkerson, John P, and Cosgarea, Andrew J
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- 2012
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16. Predictors of Bone Loss in Anterior Glenohumeral Instability.
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Hettrich, Carolyn M., Magnuson, Justin A., Baumgarten, Keith M., Brophy, Robert H., Kattan, Michael, Bishop, Julie Y., Bollier, Matthew J., Bravman, Jonathan T., Cvetanovich, Gregory L., Dunn, Warren R., Feeley, Brian T., Frank, Rachel M., Kuhn, John E., Lansdown, Drew A., Benjamin Ma, C., Marx, Robert G., McCarty, Eric C., Neviaser, Andrew S., Ortiz, Shannon F., and Seidl, Adam J.
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CONFIDENCE intervals ,SHOULDER injuries ,JOINT instability ,BONE resorption ,CROSS-sectional method ,AGE distribution ,JOINT dislocations ,RACE ,RISK assessment ,SEX distribution ,GLENOHUMERAL joint ,CONTACT sports ,QUESTIONNAIRES ,DESCRIPTIVE statistics ,LOGISTIC regression analysis ,DATA analysis software ,ODDS ratio ,LONGITUDINAL method ,DISEASE risk factors ,DISEASE complications - Abstract
Background: Anterior shoulder instability can result in bone loss of both the anterior glenoid and the posterior humerus. Bone loss has been shown to lead to increased failure postoperatively and may necessitate more complex surgical procedures, resulting in worse clinical outcomes and posttraumatic arthritis. Hypothesis/Purpose: The purpose of this study was to investigate predictors of glenoid and humeral head bone loss in patients undergoing surgery for anterior shoulder instability. It was hypothesized that male sex, contact sport participation, traumatic dislocation, and higher number of instability events would be associated with greater bone loss. Study Design: Cross-sectional study; Level of evidence, 3. Methods: A total of 892 patients with anterior shoulder instability were prospectively enrolled in the Multicenter Orthopaedic Outcomes Network (MOON) Shoulder Instability cohort. The presence and amount of anterior glenoid bone loss and accompanying Hill-Sachs lesions were quantified. Descriptive information and injury history were used to construct proportional odds models for the presence of any bone defect, for defects >10% of the anterior glenoid or humeral head, and for combined bony defects. Results: Anterior glenoid bone loss and Hill-Sachs lesions were present in 185 (20.7%) and 470 (52.7%) patients, respectively. Having an increased number of dislocations was associated with bone loss in all models. Increasing age, male sex, and non-White race were associated with anterior glenoid bone defects and Hill-Sachs lesions. Contact sport participation was associated with anterior glenoid bone loss, and Shoulder Actitvity Scale with glenoid bone loss >10%. A positive apprehension test was associated with Hill-Sachs lesions. Combined lesions were present in 19.4% of patients, and for every additional shoulder dislocation, the odds of having a combined lesion was 95% higher. Conclusion: An increasing number of preoperative shoulder dislocations is the factor most strongly associated with glenoid bone loss, Hill-Sachs lesions, and combined lesions. Early surgical stabilization before recurrence of instability may be the most effective method for preventing progression to clinically significant bone loss. Patients should be made aware of the expected course of shoulder instability, especially in athletes at high risk for recurrence and osseous defects, which may complicate care and worsen outcomes. Registration: NCT02075775 (ClinicalTrials.gov identifier). [ABSTRACT FROM AUTHOR]
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- 2023
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17. Surgical treatment of multiligament knee injuries
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Cook, Shane, Ridley, T. J., McCarthy, Mark A., Gao, Yubo, Wolf, Brian R., Amendola, Annunziato, and Bollier, Matthew J.
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- 2015
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18. Repair of acute and chronic distal biceps tendon ruptures using the EndoButton
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Dillon, Mark T., Bollier, Matthew J., and King, Jeffrey C.
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- 2011
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19. OUTCOMES FOLLOWING PRIMARY ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION USING A PARTIAL TRANSPHYSEAL (OVER-THETOP) TECHNIQUE IN SKELETALLY IMMATURE PATIENTS.
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Shamrock, Alan G., Duchman, Kyle R., Cates, William T., Cates, Robert A., Khazi, Zain M., Westermann, Robert W., Bollier, Matthew J., and Wolf, Brian R.
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- 2022
20. Anterior Cruciate Ligament Reconstruction: A Comparative Clinical Study Between Adjustable and Fixed Length Suspension Devices
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Uribe-Echevarria, Bastian, Magnuson, Justin A., Amendola, Annunziato, Bollier, Matthew J., Wolf, Brian R., and Hettrich, Carolyn M.
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Adult ,Joint Instability ,Male ,Young Adult ,Anterior Cruciate Ligament Reconstruction ,Humans ,Female ,Hamstring Muscles ,Patient Reported Outcome Measures ,Prospective Studies ,Middle Aged ,Sports Medicine ,Autografts - Abstract
BACKGROUND: Adjustable-length cortical suspension devices provide technical advantages over fixed-length devices for femoral graft fixation during anterior cruciate ligament (ACL) reconstruction but have shown increased lengthening during cyclic loading in biomechanical studies. The purpose of this study was to prospectively measure graft elongation in vivo along with patient reported outcomes. METHODS: Thirty-seven skeletally mature patients diagnosed with anterior cruciate insufficiency who underwent ACL reconstruction using autogenous hamstring graft were included in this study. Thirteen patients received an ACL reconstruction using a fixed loop device (FL) and twenty-four patients were treated with an adjustable-length device (AL) based on surgeon preference. Bilateral knee laxity was measured with a KT1000 Arthrometer before surgery and immediately after surgery with the patient under anesthesia, and at the 6-week, 3-month, and 6-month clinical follow-up appointments. All measurements were made by the same operator with maximum force testing. Differences between the affected knee and the contralateral knee were measured. Patient reported outcomes were collected at 6 and 24 months post-operatively. RESULTS: No difference was found between the FL and AL groups in either knee laxity or patient reported outcomes. Average side-to-side difference at 6 months was 1.8 ± 2.6 mm for the FL group and 1.7 ± 2.4 mm for the AL group (p=.874). One patient in the FL group (7.7%) and two in the AL group (9.5%) had a side to side difference in laxity greater 5 mm. Patient reported outcomes did not differ between groups and no patients underwent revision surgery. CONCLUSIONS: The adjustable-length cortical suspension device (AL) did not demonstrate increased laxity as compared to fixed-length devices. There was no difference in patient reported outcomes between the groups. Level of Evidence: IV
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- 2020
21. Factors Associated With Shoulder Activity Level at Time of Surgery and at 2-Year Follow-up in Patients Undergoing Shoulder Stabilization Surgery.
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Brophy, Robert H., Dunn, Warren R., Baumgarten, Keith M., Bishop, Julie Y., Bollier, Matthew J., Bravman, Jonathan T., Feeley, Brian T., Grant, John A., Jones, Grant L., Kuhn, John E., Benjamin Ma, C., Marx, Robert G., McCarty, Eric C., Ortiz, Shannon F., Smith, Matthew V., Wolf, Brian R., Wright, Rick W., Zhang, Alan L., and Hettrich, Carolyn M.
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SHOULDER joint surgery ,EVALUATION of medical care ,RESEARCH ,SHOULDER joint ,CONFIDENCE intervals ,CROSS-sectional method ,REGRESSION analysis ,PHYSICAL activity ,DESCRIPTIVE statistics ,EMPLOYMENT ,LOGISTIC regression analysis ,DATA analysis software ,ODDS ratio ,BODY mass index ,SMOKING ,MARITAL status ,SHOULDER dislocations ,LONGITUDINAL method - Abstract
Background: Patients undergoing shoulder stabilization surgery have been shown to have elevated activity levels. Factors associated with shoulder activity in this patient population at baseline and after surgery are unknown. Hypothesis: Patient-specific variables are associated with shoulder activity level at baseline and at 2-year follow-up in a cohort of patients undergoing shoulder stabilization surgery. Study Design: Cohort study; Level of evidence, 2. Methods: Patients undergoing shoulder stabilization surgery were prospectively enrolled. As part of the data collection process, patients completed a previously validated Shoulder Activity Scale. A regression analysis was performed to assess the association of patient characteristics with baseline and 2-year follow-up shoulder activity levels. Results: A total of 764 (n = 612 men, n = 152 women) out of 957 patients (80%) undergoing shoulder stabilization surgery with a median age of 25 years had baseline and 2-year follow-up data and were included in the current analysis. The baseline shoulder activity level was associated with race (P <.0001) and preoperative duration of instability (P <.0001). At 2 years, 52% of the cohort had returned to the same or higher activity level after surgery. Predictors of higher shoulder activity level at 2-year follow-up included higher baseline activity level (P <.0001), male sex (P <.0001), younger age (P =.004), higher body mass index (BMI) (P =.03), more dislocations (P =.03), nonsmokers (P =.04), and race (P =.04). Conclusion: A longer duration of preoperative symptoms was associated with a lower baseline activity in this cohort. High baseline preoperative shoulder activity, younger age, male sex, higher BMI, number of dislocations, and nonsmoking status predicted higher shoulder activity 2 years after shoulder stabilization surgery. Registration: NCT02075775 (ClinicalTrials.gov identifier). [ABSTRACT FROM AUTHOR]
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- 2022
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22. Management of Glenoid and Humeral Bone Loss
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Bollier, Matthew J. and Arciero, Robert
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- 2010
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23. Medical supervision of high school football in Chicago: does inadequate staffing compromise healthcare?
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Tonino, Pietro M. and Bollier, Matthew J.
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Medical care -- Case studies ,Medical care -- United States ,Football players -- Health aspects ,Football players -- Injuries ,Football players -- Case studies ,High school sports -- Health aspects ,High school sports -- Injuries ,High school sports -- Case studies ,Health - Published
- 2004
24. Beach Chair Versus Lateral Decubitus Position: Differences in Suture Anchor Position and Number During Arthroscopic Anterior Shoulder Stabilization.
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Baron, Jacqueline E., Duchman, Kyle R., Hettrich, Carolyn M., Glass, Natalie A., Ortiz, Shannon F., Baumgarten, Keith M., Bishop, Julie Y., Bollier, Matthew J., Bravman, Jonathan T., Brophy, Robert H., Carpenter, James E., Cox, Charles L., Feeley, Brian T., Frank, Rachel M., Grant, John A., Jones, Grant L., Kuhn, John E., Lansdown, Drew A., Benjamin Ma, C., and Marx, Robert G.
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RESEARCH ,CONFIDENCE intervals ,ARTHROSCOPY ,SHOULDER injuries ,CROSS-sectional method ,MEDICAL cooperation ,MANN Whitney U Test ,FISHER exact test ,T-test (Statistics) ,HIP joint injuries ,DESCRIPTIVE statistics ,CHI-squared test ,RESEARCH funding ,DATA analysis software ,ODDS ratio ,PATIENT positioning ,LONGITUDINAL method ,JOINT hypermobility ,DISEASE risk factors - Abstract
Background: Arthroscopic shoulder capsulolabral repair using glenoid-based suture anchor fixation provides consistently favorable outcomes for patients with anterior glenohumeral instability. To optimize outcomes, inferior anchor position, especially at the 6-o'clock position, has been emphasized. Proponents of both the beach-chair (BC) and lateral decubitus (LD) positions advocate that this anchor location can be consistently achieved in both positions. Hypothesis: Patient positioning would be associated with the surgeon-reported labral tear length, total number of anchors used, number of anchors in the inferior glenoid, and placement of an anchor at the 6-o'clock position. Study Design: Cross-sectional study; Level of evidence, 3. Methods: This study was a cross-sectional analysis of a prospective multicenter cohort of patients undergoing primary arthroscopic anterior capsulolabral repair. Patient positioning in the BC versus LD position was determined by the operating surgeon and was not randomized. At the time of operative intervention, surgeon-reported labral tear length, total anchor number, anchor number in the inferior glenoid, and anchor placement at the 6-o'clock position were evaluated between BC and LD cohorts. Descriptive statistics and between-group differences (continuous: t test [normal distributions], Wilcoxon rank sum test [nonnormal distributions], and chi-square test [categorical]) were assessed. Results: In total, 714 patients underwent arthroscopic anterior capsulolabral repair (BC vs LD, 406 [56.9%] vs 308 [43.1%]). The surgeon-reported labral tear length was greater for patients having surgery in the LD position (BC vs LD [mean ± SD], 123.5°± 49° vs 132.3°± 44°; P =.012). The LD position was associated with more anchors placed in the inferior glenoid and more frequent placement of anchors at the 6-o'clock (BC vs LD, 22.4% vs 51.6%; P <.001). The LD position was more frequently associated with utilization of ≥4 total anchors (BC vs LD, 33.5% vs 46.1%; P <.001). Conclusion: Surgeons utilizing the LD position for arthroscopic capsulolabral repair in patients with anterior shoulder instability more frequently placed anchors in the inferior glenoid and at the 6-o'clock position. Additionally, surgeon-reported labral tear length was longer when utilizing the LD position. These results suggest that patient positioning may influence the total number of anchors used, the number of anchors used in the inferior glenoid, and the frequency of anchor placement at the 6 o'clock position during arthroscopic capsulolabral repair for anterior shoulder instability. How these findings affect clinical outcomes warrants further study. Registration: NCT02075775 (ClinicalTrials.gov identifier) [ABSTRACT FROM AUTHOR]
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- 2021
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25. Return to Sport After Anterior Cruciate Ligament Reconstruction in a Cohort of Division I NCAA Athletes From a Single Institution.
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Zampogna, Biagio, Vasta, Sebastiano, Torre, Guglielmo, Gupta, Akhil, Hettrich, Carolyn M., Bollier, Matthew J., Wolf, Brian R., and Amendola, Annunziato
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- 2021
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26. Finite Element Analysis of Patella Alta: A Patellofemoral Instability Model
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Watson, Nicole A., Duchman, Kyle R., Grosland, Nicole M., and Bollier, Matthew J.
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Joint Instability ,Models, Anatomic ,Patellofemoral Joint ,Finite Element Analysis ,Humans ,Patella ,Sports Medicine ,Biomechanical Phenomena - Abstract
This study aims to provide biomechanical data on the effect of patella height in the setting of medial patellofemoral ligament (MPFL) reconstruction using finite element analysis. The study will also examine patellofemoral joint biomechanics using variable femoral insertion sites for MPFL reconstruction.A previously validated finite element knee model was modified to study patella alta and baja by translating the patella a given distance to achieve each patella height ratio. Additionally, the models were modified to study various femoral insertion sites of the MPFL (anatomic, anterior, proximal, and distal) for each patella height model, resulting in 32 unique scenarios available for investigation.In the setting of patella alta, the patellofemoral contact area decreased, resulting in a subsequent increase in maximum patellofemoral contact pressures as compared to the scenarios with normal patellar height. Additionally, patella alta resulted in decreased lateral restraining forces in the native knee scenario as well as following MPFL reconstruction. Changing femoral insertion sites had a variable effect on patellofemoral contact pressures; however, distal and anterior femoral tunnel malpositioning in the setting of patella alta resulted in grossly elevated maximum patellofemoral contact pressures as compared to other scenarios.Patella alta after MPFL reconstruction results in decreased lateral restraining forces and patellofemoral contact area and increased maximum patellofemoral contact pressures. When the femoral MPFL tunnel is malpositioned anteriorly or distally on the femur, the maximum patellofemoral contact pressures increase with severity of patella alta.When evaluating patients with patellofemoral instability, it is important to recognize patella alta as a potential aggravating factor. Failure to address patella alta in the setting of MPFL femoral tunnel malposition may result in even further increases in patellofemoral contact pressures, making it essential to optimize intraoperative techniques to confirm anatomic MPFL femoral tunnel positioning.
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- 2017
27. Primary Partial Transphyseal Anterior Cruciate Ligament Reconstruction in Children with Open Physes
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Cates, William T., Cates, Robert A., Khazi, Zain, Shamrock, Alan G., Duchman, Kyle R., Westermann, Robert W., Bollier, Matthew J., and Wolf, Brian R.
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- 2021
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28. Graft Preparation with Intraoperative Vancomycin Decreases Infection after ACL Reconstruction
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Shamrock, Alan G., Baron, Jacqueline, Cates, William T., Cates, Robert A., An, Qiang, Wolf, Brian R., Bollier, Matthew J., Duchman, Kyle R., and Westermann, Robert W.
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- 2021
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29. Risk Factors for Intra-articular Bone and Cartilage Lesions in Patients Undergoing Surgical Treatment for Posterior Instability.
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Lansdown, Drew A., Cvetanovich, Gregory L., Zhang, Alan L., Feeley, Brian T., Wolf, Brian R., Hettrich, Carolyn M., Baumgarten, Keith M., Bishop, Julie Y., Bollier, Matthew J., Bravman, Jonathan T., Brophy, Robert H., Cox, Charles L., Frank, Rachel M., Grant, John A., Jones, Grant L., Kuhn, John E., Marx, Robert G., McCarty, Eric C., Miller, Bruce S., and Ortiz, Shannon F.
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ARTICULAR cartilage injuries ,BONE diseases ,FISHER exact test ,JOINT hypermobility ,MEDICAL cooperation ,QUESTIONNAIRES ,RESEARCH ,SHOULDER injuries ,SHOULDER dislocations ,SURGEONS ,LOGISTIC regression analysis ,GLENOHUMERAL joint ,CROSS-sectional method ,DATA analysis software ,ODDS ratio ,MANN Whitney U Test ,DISEASE risk factors - Abstract
Background: Patients with posterior shoulder instability may have bone and cartilage lesions (BCLs) in addition to capsulolabral injuries, although the risk factors for these intra-articular lesions are unclear. Hypothesis: We hypothesized that patients with posterior instability who had a greater number of instability events would have a higher rate of BCLs compared with patients who had fewer instability episodes. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Data from the Multicenter Orthopaedic Outcomes Network (MOON) Shoulder Group instability patient cohort were analyzed. Patients aged 12 to 99 years undergoing primary surgical treatment for shoulder instability were included. The glenohumeral joint was evaluated by the treating surgeon at the time of surgery, and patients were classified as having a BCL if they had any grade 3 or 4 glenoid or humeral cartilage lesion, reverse Hill-Sachs lesion, bony Bankart lesion, or glenoid bone loss. The effects of the number of instability events on the presence of BCLs was investigated by use of Fisher exact tests. Logistic regression modeling was performed to investigate the independent contributions of demographic variables and injury-specific variables to the likelihood of having a BCL. Significance was defined as P <.05. Results: We identified 271 patients (223 male) for analysis. Bone and cartilage lesions were identified in 54 patients (19.9%) at the time of surgical treatment. A glenoid cartilage injury was most common and was identified in 28 patients (10.3%). A significant difference was noted between the number of instability events and the presence of BCLs (P =.025), with the highest rate observed in patients with 2 to 5 instability events (32.3%). Multivariate logistic regression modeling indicated that increasing age (P =.019) and 2 to 5 reported instability events (P =.001) were significant independent predictors of the presence of BCLs. For bone lesions alone, the number of instability events was the only significant independent predictor; increased risk of bone lesion was present for patients with 1 instability event (OR, 6.1; P =.012), patients with 2 to 5 instability events (OR, 4.2; P =.033), and patients with more than 5 instability events (OR, 6.0; P =.011). Conclusion: Bone and cartilage lesions are seen significantly more frequently with increasing patient age and in patients with 2 to 5 instability events. Early surgical stabilization for posterior instability may be considered to potentially limit the extent of associated intra-articular injury. The group of patients with more than 5 instability events may represent a different pathological condition, as this group showed a decrease in the likelihood of cartilage injury, although not bony injury. [ABSTRACT FROM AUTHOR]
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- 2020
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30. Are Patients Who Undergo the Latarjet Procedure Ready to Return to Play at 6 Months? A Multicenter Orthopaedic Outcomes Network (MOON) Shoulder Group Cohort Study.
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Frantz, Travis L., Everhart, Joshua S., Cvetanovich, Gregory L., Neviaser, Andrew, Jones, Grant L., Hettrich, Carolyn M., Wolf, Brian R., Baumgarten, Keith M., Bollier, Matthew J., Bravman, Jonathan T., Kuhn, John E., Ma, C. Benjamin, Marx, Robert G., McCarty, Eric C., Ortiz, Shannon F., Zhang, Alan L., and Bishop, Julie Y.
- Subjects
SHOULDER joint surgery ,ATHLETES ,CONFIDENCE intervals ,JOINT hypermobility ,RANGE of motion of joints ,MEDICAL cooperation ,MULTIVARIATE analysis ,MUSCLE strength ,RESEARCH ,SCAPULA ,SHOULDER dislocations ,LOGISTIC regression analysis ,SPORTS participation ,CONTACT sports ,CASE-control method ,ODDS ratio - Abstract
Background: The Latarjet procedure is growing in popularity for treating athletes with recurrent anterior shoulder instability, largely because of the high recurrence rate of arthroscopic stabilization, particularly among contact athletes with bone loss. Purpose: (1) To evaluate return of strength and range of motion (ROM) 6 months after the Latarjet procedure and (2) to determine risk factors for failure to achieve return-to-play (RTP) criteria at 6 months. Study Design: Case-control study; Level of evidence, 3. Methods: A total of 65 athletes (83% contact sports, 37% overhead sports; mean ± SD age, 24.5 ± 8.2 years; 59 male, 6 female) who enrolled in a prospective multicenter study underwent the Latarjet procedure for anterior instability (29% as primary procedure for instability, 71% for failed prior stabilization procedure). Strength and ROM were assessed preoperatively and 6 months after surgery. RTP criteria were defined as return to baseline strength and <20° side-to-side ROM deficits in all planes. The independent likelihood of achieving strength and motion RTP criteria at 6 months was assessed through multivariate logistic regression modeling with adjustment as needed for age, sex, subscapularis split versus tenotomy, preoperative strength/motion, percentage bone loss, number of prior dislocations, preoperative subjective shoulder function (American Shoulder and Elbow Surgeons and Western Ontario Shoulder Instability Index percentage), and participation in contact versus overhead sports. Results: Of the patients, 55% failed to meet ≥1 RTP criteria: 6% failed for persistent weakness and 51% for ≥20° side-to-side loss of motion. There was no difference in failure to achieve RTP criteria at 6 months between subscapularis split (57%) versus tenotomy (47%) (P =.49). Independent risk factors for failure to achieve either strength or ROM criteria were preoperative American Shoulder and Elbow Surgeons scores (per 10-point decrease: adjusted odds ratio [aOR], 1.61; 95% CI, 1.14-2.43; P =.006), Western Ontario Shoulder Instability Index percentage (per 10% decrease: aOR, 0.61; 95% CI, 0.38-0.92; P =.01), and a preoperative side-to-side ROM deficit ≥20° in any plane (aOR, 5.01; 95% CI, 1.42-21.5; P =.01) or deficits in external rotation at 90° of abduction (per 10° increased deficit: aOR, 1.64; 95% CI, 1.06-2.88; P =.02). Conclusion: A large percentage of athletes fail to achieve full strength and ROM 6 months after the Latarjet procedure. Greater preoperative stiffness and subjective disability are risk factors for failure to meet ROM or strength RTP criteria. [ABSTRACT FROM AUTHOR]
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- 2020
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31. New Complication Associated With All-Inside Meniscal Repair Device
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Warth, Lucian C., Bollier, Matthew J., Hoffman, Douglas F., Cummins, Justin S., and Hall, Mederic M.
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postoperative complications ,meniscus repair ,knee arthroscopy ,diagnostic ultrasound - Abstract
Background: The importance of meniscal preservation has become widely accepted, and meniscal repair techniques have evolved over recent years. With new techniques come new complications, which are critical to recognize. Purpose: To describe a new complication of foreign body reaction from a nonabsorbable suture anchor associated with improper placement of the all-inside meniscal device. Study Design: Case series; Level of evidence, 4. Methods: This study was a retrospective review of 3 patients who developed pain associated with a foreign body reaction from a misplaced all-inside meniscal device. Results: All patients had a delayed diagnosis (6 months to 8 years) and negative magnetic resonance imaging (MRI). Diagnostic ultrasound identified the misplaced suture with foreign body reaction and was used to guide a diagnostic injection of local anesthetic prior to surgical intervention. Intraoperative ultrasound guidance was utilized to precisely localize and excise the suture material and associated reactive tissue. Conclusion: Foreign body reaction from a misplaced all-inside meniscal device is a previously unreported complication. Diagnosis is challenging as MRI and arthroscopy can be unrevealing. Diagnostic ultrasound was able to identify the foreign body reaction, confirm the diagnosis by facilitating diagnostic local anesthetic injection, and guide surgical excision. Sonographic evaluation should be considered in patients presenting with ongoing knee pain after all-inside meniscus repair.
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- 2016
32. Preoperative Performance of PROMIS in Patients With Patellofemoral Malalignment and Chondral Disease.
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Carender, Christopher N., Bollier, Matthew J., Wolf, Brian R., Duchman, Kyle R., Qiang An, and Westermann, Robert W.
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- 2019
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33. Clinical Outcomes After Anterior Shoulder Stabilization in Overhead Athletes: An Analysis of the MOON Shoulder Instability Consortium.
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Trinh, Thai Q., Naimark, Micah B., Bedi, Asheesh, Carpenter, James E., Robbins, Christopher B., Grant, John A., Miller, Bruce S., Ortiz, Shannon, Bollier, Matthew J., Kuhn, John E., Cox, Charlie L., Ma, C. Benjamin, Feeley, Brain T., Zhang, Alan L., McCarty, Eric C., Bravman, Jonathan T., Bishop, Julie Y., Jones, Grant L., Brophy, Robert H., and Wright, Rick W.
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ARTHROSCOPY ,ATHLETIC ability ,BASEBALL ,CHI-squared test ,CRICKET (Sport) ,FISHER exact test ,FOOTBALL ,JOINT hypermobility ,RANGE of motion of joints ,CASE studies ,QUESTIONNAIRES ,REGRESSION analysis ,REOPERATION ,SHOULDER injuries ,SPORTS injuries ,STATISTICS ,SURGICAL complications ,OPERATIVE surgery ,T-test (Statistics) ,DISEASE relapse ,SPORTS participation ,TREATMENT effectiveness ,THROWING (Sports) ,DATA analysis software ,DESCRIPTIVE statistics ,MANN Whitney U Test - Abstract
Background: Traumatic anterior shoulder instability is a common condition affecting sports participation among young athletes. Clinical outcomes after surgical management may vary according to patient activity level and sport involvement. Overhead athletes may experience a higher rate of recurrent instability and difficulty returning to sport postoperatively with limited previous literature to guide treatment. Purpose: To report the clinical outcomes of patients undergoing primary arthroscopic anterior shoulder stabilization within the Multicenter Orthopaedic Outcomes Network (MOON) Shoulder Instability Consortium and to identify prognostic factors associated with successful return to sport at 2 years postoperatively. Study Design: Case series; Level of evidence, 4. Methods: Overhead athletes undergoing primary arthroscopic anterior shoulder stabilization as part of the MOON Shoulder Instability Consortium were identified for analysis. Primary outcomes included the rate of recurrent instability, defined as any patient reporting recurrent dislocation or reoperation attributed to persistent instability, and return to sport at 2 years postoperatively. Secondary outcomes included the Western Ontario Shoulder Instability Index and Kerlan-Jobe Orthopaedic Clinic Shoulder and Elbow questionnaire score. Univariate regression analysis was performed to identify patient and surgical factors predictive of return to sport at short-term follow-up. Results: A total of 49 athletes were identified for inclusion. At 2-year follow-up, 31 (63%) athletes reported returning to sport. Of those returning to sport, 22 athletes (45% of the study population) were able to return to their previous levels of competition (nonrefereed, refereed, or professional) in at least 1 overhead sport. Two patients (4.1%) underwent revision stabilization, although 14 (28.6%) reported subjective apprehension or looseness. Age (P =.87), sex (P =.82), and baseline level of competition (P =.37) were not predictive of return to sport. No difference in range of motion in all planes (P >.05) and Western Ontario Shoulder Instability Index scores (78.0 vs 80.1, P =.73) was noted between those who reported returning to sport and those who did not. Conclusion: Primary arthroscopic anterior shoulder stabilization in overhead athletes is associated with a low rate of recurrent stabilization surgery. Return to overhead athletics at short-term follow-up is lower than that previously reported for the general athletic population. [ABSTRACT FROM AUTHOR]
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- 2019
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34. Biomechanical Evaluation of Medial Patellofemoral Ligament Reconstruction
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Duchman, Kyle R, DeVries, Nicole A, McCarthy, Mark A, Kuiper, Justin J, Grosland, Nicole M, and Bollier, Matthew J
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Aged, 80 and over ,Patellofemoral Joint ,Treatment Outcome ,Knee Joint ,Patellar Ligament ,Patellar Dislocation ,Humans ,Original Articles ,Middle Aged ,Range of Motion, Articular ,Plastic Surgery Procedures ,Biomechanical Phenomena - Abstract
The medial patellofemoral ligament (MPFL) is the most frequently injured soft tissue structure following acute lateral patellar dislocation. MPFL reconstruction has become a popular option to restore patellar stability following lateral patellar dislocation due to the high incidence of recurrent instability following conservative management. Anatomic reconstruction of the MPFL minimizes graft length changes during full knee range of motion and restores patellar stability.Four fresh frozen cadaver specimens underwent biomechanical testing in a materials testing machine. With the knee fixed in 30° of flexion, the patella was translated laterally a distance of 10 mm and continuous force-displace- ment data was collected with the intact MPFL and again following a newly described MPFL reconstruction technique. Lateral force-displacement and stiffness data were calculated, allowing comparison between the intact and reconstructed MPFL.The average lateral restraining force provided by the intact MPFL was 10.6 ± 5.7, 36.6 ± 2.7, and 69.0 ± 5.9 N while the lateral restraining force following MPFL reconstruction was 0.4 ± 4.3, 50.3 ± 16.3, and 110.2 ± 17.5 N at 1, 5, and 10 mm of lateral displacement, respectively.Anatomic MPFL reconstruction displays similar lateral restraining force compared to the intact MPFL at low levels of lateral displacement. At higher levels of displacement, the reconstructed MPFL provides increased lateral restraining force compared to the intact MPFL, improving patellar stability in pathologic knees.
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- 2013
35. Descriptive Epidemiology of the MOON Shoulder Instability Cohort.
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Kraeutler, Matthew J., McCarty, Eric C., Belk, John W., Wolf, Brian R., Hettrich, Carolyn M., Ortiz, Shannon F., Bravman, Jonathan T., Baumgarten, Keith M., Bishop, Julie Y., Bollier, Matthew J., Brophy, Robert H., Carey, James L., Carpenter, James E., Cox, Charlie L., Feeley, Brian T., Grant, John A., Jones, Grant L., Kuhn, John E., Kelly, John D., and Ma, C. Benjamin
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BASKETBALL ,COMPUTED tomography ,EPIDEMIOLOGICAL research ,FOOTBALL ,JOINT hypermobility ,RANGE of motion of joints ,MAGNETIC resonance imaging ,RESEARCH methodology ,MEDICAL cooperation ,HEALTH outcome assessment ,PROBABILITY theory ,RESEARCH ,RESEARCH funding ,SHOULDER ,SHOULDER injuries ,SPORTS injuries ,T-test (Statistics) ,DESCRIPTIVE statistics - Abstract
Background: Shoulder instability is a common diagnosis among patients undergoing shoulder surgery. Purpose: To perform a descriptive analysis of patients undergoing surgery for shoulder instability through a large multicenter consortium. Study Design: Case series; Level of evidence, 4. Methods: All patients undergoing surgery for shoulder instability who were enrolled in the MOON Shoulder Instability Study were included. Baseline demographics included age, sex, body mass index, and race. Baseline patient-reported outcomes (PROs) included the American Shoulder and Elbow Surgeons (ASES) score, Shoulder Activity Score, Western Ontario Shoulder Instability Index (WOSI), 36-Item Health Survey (RAND-36), and Single Assessment Numeric Evaluation (SANE). The preoperative physician examination included active range of motion (ROM) and strength testing. Preoperative imaging assessments with plain radiography, magnetic resonance imaging (MRI), and computed tomography were also included and analyzed. Results: Twenty-six surgeons had enrolled 863 patients (709 male, 154 female) across 10 clinical sites. The mean age for the cohort was 24 years (range, 12-63 years). Male patients represented 82% of the cohort. The primary direction of instability was anterior for both male (74%) and female (73%) patients. Football (24%) and basketball (13%) were the most common sports in which the primary shoulder injury occurred. No clinically significant differences were found in preoperative ROM between the affected and unaffected sides for any measurement taken. Preoperative MRI scans were obtained in 798 patients (92%). An anterior labral tear was the most common injury found on preoperative MRI, seen in 66% of patients, followed by a Hill-Sachs lesion in 41%. Poor PRO scores were recorded preoperatively (mean: ASES, 72.4; WOSI, 43.3; SANE, 46.6). Conclusion: The MOON Shoulder Instability Study has enrolled the largest cohort of patients undergoing shoulder stabilization to date. Anterior instability is most common among shoulder instability patients, and most patients undergoing shoulder stabilization are in their early 20s or younger. The results of this study provide important epidemiological information for patients undergoing shoulder stabilization surgery. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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36. Paper #16 - Patient factors associated with prolonged opioid use after rotator cuff repair
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Westermann, Robert W., Anthony, Christopher, Bedard, Nicholas, Glass, Natalie A., Bollier, Matthew J., Hettrich, Carolyn M., and Wolf, Brian R.
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- 2017
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37. Patients Undergoing Shoulder Stabilization Surgery Have Elevated Shoulder Activity Compared With Sex- and Age-Matched Healthy Controls.
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Brophy, Robert H., Hettrich, Carolyn M., Ortiz, Shannon, Wolf, Brian R., Baumgarten, Keith M., Bedi, Asheesh, Bishop, Julie Y., Bollier, Matthew J., Bravman, Jonathan T., Carey, James L., Cox, Charlie L., Dunn, Warren, Feeley, Brian T., Jones, Grant L., Kelly, John D., Kuhn, John E., Benjamin Ma, C., Marx, Robert G., Miller, Bruce S., and Sennett, Brian J.
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SHOULDER surgery ,SHOULDER dislocations ,LABRAL injuries ,THERAPEUTICS ,INJURY risk factors ,SHOULDER joint surgery ,SHOULDER joint ,JOINT hypermobility ,LONGITUDINAL method ,SEX distribution ,SHOULDER injuries ,ACQUISITION of data ,CROSS-sectional method ,DESCRIPTIVE statistics ,PHYSIOLOGY - Abstract
Background: Shoulder activity level may be a risk factor for shoulder instability, an indication for surgical intervention, and a risk factor for failure of operative stabilization. Hypothesis: Patients undergoing shoulder stabilization surgery have a higher activity level compared with sex- and age-matched healthy controls. Study Design: Cross-sectional study. Level of Evidence: Level 2. Methods: Patients undergoing shoulder stabilization surgery aged 18 to 50 years were prospectively enrolled. As part of data collection, patients completed a previously validated shoulder activity scale, which generates a score reporting frequency of activity ranging from 0 (least active) to 20 (most active). The activity level of these patients was compared with sex- and age-matched norms for a healthy population with no history of shoulder disorders. Results: A total of 409 subjects (343 male, 66 female) undergoing shoulder instability surgery completed the activity scale. Seventy-seven percent of patients had higher shoulder activity level than sex- and age-matched controls. Seventy-nine percent aged 18 to 30 years had a higher shoulder activity level than controls, with an identical distribution for men (79%) and women (79%). Among patients aged 31 to 50 years, 70% had higher activity than controls. However, men were more likely to have a higher activity level than controls (72%) versus women (59%). In patients aged 18 to 30 years, median activity level for instability patients was 14 in men compared with 10 in controls, and 13 in women compared with 8 in controls. In patients aged 31 to 50 years, median activity level was 13 in men compared with 10 in controls and 10 in women compared with 8 in controls. Conclusion: Patients undergoing shoulder stabilization surgery have a higher activity level than sex- and age-matched healthy controls. Clinical Relevance: Shoulder activity is especially elevated in younger, male instability patients. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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38. AGE DIFFERENCES IN THE PREVALENCE OF ISOLATED MEDIAL AND LATERAL MENISCAL TEARS IN SURGICALLY TREATED PATIENTS.
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Ridley, T. J., McCarthy, Mark A., Bollier, Matthew J., Wolf, Brian R., and Amendola, Annunziato
- Published
- 2017
39. INJURIES IN COLLEGIATE WRESTLERS AT AN ELITE DIVISION 1 NCAA WRESTLING PROGRAM: AN EPIDEMIOLOGICAL STUDY.
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Otero, Jesse E., Graves, Christopher M., and Bollier, Matthew J.
- Published
- 2017
40. A FINITE ELEMENT ANALYSIS OF MEDIAL PATELLOFEMORAL LIGAMENT RECONSTRUCTION.
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DeVries Watson, Nicole A., Duchman, Kyle R., Bollier, Matthew J., and Grosland, Nicole M.
- Published
- 2015
41. BIOMECHANICAL EVALUATION OF MEDIAL PATELLOFEMORAL LIGAMENT RECONSTRUCTION.
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Duchman, Kyle R., DeVries, Nicole A., McCarthy, Mark A., Kuiper, Justin J., Grosland, Nicole M., and Bollier, Matthew J.
- Published
- 2013
42. Surgical management of posterolateral corner injuries of the knee.
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Bollier, Matthew J and Arciero, Robert A
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- 2011
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43. Biomechanical Evaluation of Arthroscopic Rotator Cuff Repairs Over Time.
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Mazzocca, Augustus D., Bollier, Matthew J., Obopilwe, Elifho, DeAngelis, Joseph P., Burkhart, Stephen S., Warren, Russell F., and Arciero, Robert A.
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Purpose: The aim of this study was to assess the contact pressure, force, and area over time for 4 common arthroscopic rotator cuff repair techniques. Methods: The transosseous-equivalent, single-row, triangle double-row, and suture-chain transosseous repair techniques were used to repair a full-thickness tear of the supraspinatus in 16 cadaveric shoulders. Continuous data points were collected immediately after repair and for 160 minutes at set time intervals by use of a custom thin film pressure sensor. Results: Each of the 4 rotator cuff repair techniques showed decreased contact force, pressure, and area 160 minutes after the repair was performed. The transosseous-equivalent construct had the highest contact pressure and force initially and at all time points up to 160 minutes. Although the 3 double-row constructs had greater pressure and force at all time points compared with the single-row repair, only the transosseous-equivalent group showed a statistically greater pressure and force when compared with single-row repair (P < .05). Conclusions: Contact pressure, force, and pressurized footprint area decrease 160 minutes after repair regardless of repair technique. The transosseous-equivalent group had the highest contact pressure and force at all time points. Clinical Relevance: The decrease in contact pressure and force after rotator cuff repair may have important implications in evaluating tendon-to-bone healing and determining the optimal rehabilitation protocol. [Copyright &y& Elsevier]
- Published
- 2010
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44. Surgeon Agreement on the Presence of Pathologic Anterior Instability on Shoulder Imaging Studies.
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Beason, Austin M., Koehler, Ryan J., Sanders, Rosemary A., Rode, Brooke E., Menge, Travis J., McCullough, Kirk A., Glass, Natalie A., Hettrich, Carolyn M., Cox, Charles L., Bollier, Matthew J., Wolf, Brian R., Spencer, Edwin E., Grant, John A., Bishop, Julie Y., Jones, Grant L., Barlow, Jonathan D., Baumgarten, Keith M., Kelly, John D., Sennett, Brian J., and Zgonis, Milt
- Published
- 2019
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45. Performance of the PROMIS in Patients After Anterior Cruciate Ligament Reconstruction.
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Scott, Elizabeth J., Westermann, Robert, Glass, Nathalie A., Hettrich, Carolyn, Wolf, Brian R., and Bollier, Matthew J.
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- 2018
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46. Outcomes Following Primary Anterior Cruciate Ligament Reconstruction Using a Partial Transphyseal (Over-the-Top) Technique in Skeletally Immature Patients.
- Author
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Shamrock AG, Duchman KR, Cates WT, Cates RA, Khazi ZM, Westermann RW, Bollier MJ, and Wolf BR
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- Adolescent, Anterior Cruciate Ligament surgery, Child, Female, Humans, Male, Retrospective Studies, Tibia surgery, Anterior Cruciate Ligament Injuries surgery, Anterior Cruciate Ligament Reconstruction methods
- Abstract
Background: The incidence of anterior cruciate ligament (ACL) injuries in skeletally immature patients is increasing, with ACL reconstruction preferred in this population due to reported chondroprotective benefits. Due to concerns with growth disturbance following ACL reconstruction in skeletally immature patients, various physealsparing and partial transphyseal techniques have been developed. Currently, there is no consensus on the most effective ACL reconstruction technique in skeletally immature patients. The purpose of the current study was to report the outcomes of a partial-transphyseal over-the-top (OTT) ACL reconstruction in a cohort of skeletally immature patients., Methods: All patients with radiographic evidence of open tibial and femoral physes that underwent primary ACL reconstruction using a partial-transphyseal OTT technique between 2009-2018 at a single tertiary-care institution with at least twelve months of clinical follow-up were retrospectively reviewed. Patient demographics, physical examination findings, graft ruptures, return to sport, and Tegner activity levels were analyzed. Statistical significance was defined as p<0.05., Results: Overall, 11 males and 1 female (12 knees) with a mean age of 12.8±1.8 (range: 10-16) years were included in the study. The mean postoperative follow-up of the cohort was 2.3±1.2 (range: 1.1-5.2) years. All ACLs were reconstructed with hamstring autograft with allograft augmentation utilized in a single patient. There were two cases of ACL graft rupture (16.7%). All patients were able to return to the same or higher level of sporting activity at an average of 7.4+2.7 months. There were no cases of clinically significant longitudinal or angular growth disturbance., Conclusion: Partial transphyseal ACL reconstruction using a transphyseal tibial tunnel and an extra-articular OTT technique on the femur in skeletally immature patients affords minimal risk of growth disturbance with a graft rupture rate consistent with what has been reported in this high-risk population. All patients were able to return to sport at the same or higher level. Level of Evidence: IV ., (Copyright © The Iowa Orthopaedic Journal 2022.)
- Published
- 2022
47. The Prevalence and Clinical Implications of Comorbid Back Pain in Shoulder Instability: A Multicenter Orthopaedic Outcomes Network (MOON) Shoulder Instability Cohort Study.
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Cronin KJ, Wolf BR, Magnuson JA, Jacobs CA, Ortiz S, Bishop JY, Bollier MJ, Baumgarten KM, Bravman JT, Brophy RH, Cox CL, Feeley BT, Grant JA, Jones GL, Kuhn JE, Benjamin Ma C, Marx RG, McCarty EC, Miller BS, Seidl AJ, Smith MV, Wright RW, Zhang AL, and Hettrich CM
- Abstract
Background: Understanding predictors of pain is critical, as recent literature shows that comorbid back pain is an independent risk factor for worse functional and patient-reported outcomes (PROs) as well as increased opioid dependence after total joint arthroplasty., Purpose/hypothesis: The purpose of this study was to evaluate whether comorbid back pain would be predictive of pain or self-reported instability symptoms at the time of stabilization surgery. We hypothesized that comorbid back pain will correlate with increased pain at the time of surgery as well as with worse scores on shoulder-related PRO measures., Study Design: Cross-sectional study; Level of evidence, 3., Methods: As part of the Multicenter Orthopaedic Outcomes Network (MOON) Shoulder Instability cohort, patients consented to participate in pre- and intraoperative data collection. Demographic characteristics, injury history, preoperative PRO scores, and radiologic and intraoperative findings were recorded for patients undergoing surgical shoulder stabilization. Patients were also asked, whether they had any back pain., Results: The study cohort consisted of 1001 patients (81% male; mean age, 24.1 years). Patients with comorbid back pain (158 patients; 15.8%) were significantly older (28.1 vs 23.4 years; P < .001) and were more likely to be female (25.3% vs 17.4%; P = .02) but did not differ in terms of either preoperative imaging or intraoperative findings. Patients with self-reported back pain had significantly worse preoperative pain and shoulder-related PRO scores (American Shoulder and Elbow Surgeons score, Western Ontario Shoulder Instability Index) ( P < .001), more frequent depression (22.2% vs 8.3%; P < .001), poorer mental health status (worse scores for the RAND 36-Item Health Survey Mental Component Score, Iowa Quick Screen, and Personality Assessment Screener) ( P < .01), and worse preoperative expectations ( P < .01)., Conclusion: Despite having similar physical findings, patients with comorbid back pain had more severe preoperative pain and self-reported symptoms of instability as well as more frequent depression and lower mental health scores. The combination of disproportionate shoulder pain, comorbid back pain and mental health conditions, and inferior preoperative expectations may affect not only the patient's preoperative state but also postoperative pain control and/or postoperative outcomes., Competing Interests: One or more of the authors has declared the following potential conflict of interest or source of funding: This study was supported, in part, by research grants from the Orthopaedic Research & Education Fund. B.R.W. is a paid board member of United HealthCare and a paid consultant for ConMed Linvatec and SportsMed Innovate. B.R.W.’s institution has received educational support from ConMed, Smith & Nephew, Arthrex, and Wardlow Enterprises. K.M.B. has received consulting fees from Wright Medical, speaking fees from Wright Medical and Arthrex, and royalties from Lippincott Williams & Wilkins. J.T.B. has received consulting fees from Encore Medical, Smith & Nephew, and DJO Global; speaking fees from Smith & Nephew; and royalties from Shukla Medical. R.H.B. has received educational support from Arthrex and Elite Orthopedics, speaking fees from Arthrex and Smith & Nephew, and consulting fees from ISTO Technologies and Sanofi-Aventis. B.T.F. has received hospitality payments from Zimmer Biomet. J.A.G. has received educational support from Pinnacle, hospitality payments from Aesculap Biologics and Smith & Nephew, and consulting fees from Ossur and JRF Ortho. G.L.J. is a board member for the Musculoskeletal Transplant Foundation and has received educational support from CDC Medical. J.E.K. is a paid editor for the Journal of Shoulder and Elbow Surgery. C.B.M. has received speaking fees from Zimmer Biomet and consulting fees from Zimmer Biomet, Medacta, Stryker, Tornier, Wright Medical, and Linvatec. R.G.M. is a paid editor for the Journal of Bone and Joint Surgery and receives royalties from Springer and Demos Health. E.C.M. has received consulting fees from Zimmer Biomet; research support from Smith & Nephew, Arthrex, and DePuy; and royalties from Zimmer Biomet and Elsevier. B.S.M. has received consulting fees from Arthrex. A.J.S. has received educational support from Gemini Medical and Arthrex, honoraria from Encore Medical, and consulting fees from Medacta. M.V.S. has received educational support from Elite Orthopedics and consulting fees from Arthrex and Flexion Therapeutics. R.W.W. has received royalties from Wolters Kluwer–Lippincott Williams & Wilkins and is a team physician for the St. Louis Blues Hockey Club. A.L.Z. has received consulting fees from Stryker. C.M.H. has received research support from Zimmer Biomet, speaking fees from Pacira Pharmaceuticals, and hospitality payments from Arthrex and Tornier., (© The Author(s) 2020.)
- Published
- 2020
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48. Anterior Cruciate Ligament Reconstruction: A Comparative Clinical Study Between Adjustable and Fixed Length Suspension Devices.
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Uribe-Echevarria B, Magnuson JA, Amendola A, Bollier MJ, Wolf BR, and Hettrich CM
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- Adult, Anterior Cruciate Ligament Reconstruction methods, Autografts, Female, Humans, Joint Instability physiopathology, Male, Middle Aged, Patient Reported Outcome Measures, Prospective Studies, Young Adult, Anterior Cruciate Ligament Reconstruction instrumentation, Hamstring Muscles transplantation
- Abstract
Background: Adjustable-length cortical suspension devices provide technical advantages over fixed-length devices for femoral graft fixation during anterior cruciate ligament (ACL) reconstruction but have shown increased lengthening during cyclic loading in biomechanical studies. The purpose of this study was to prospectively measure graft elongation in vivo along with patient reported outcomes., Methods: Thirty-seven skeletally mature patients diagnosed with anterior cruciate insufficiency who underwent ACL reconstruction using autogenous hamstring graft were included in this study. Thirteen patients received an ACL reconstruction using a fixed loop device (FL) and twenty-four patients were treated with an adjustable-length device (AL) based on surgeon preference. Bilateral knee laxity was measured with a KT1000 Arthrometer before surgery and immediately after surgery with the patient under anesthesia, and at the 6-week, 3-month, and 6-month clinical follow-up appointments. All measurements were made by the same operator with maximum force testing. Differences between the affected knee and the contralateral knee were measured. Patient reported outcomes were collected at 6 and 24 months post-operatively., Results: No difference was found between the FL and AL groups in either knee laxity or patient reported outcomes. Average side-to-side difference at 6 months was 1.8 ± 2.6 mm for the FL group and 1.7 ± 2.4 mm for the AL group (p=.874). One patient in the FL group (7.7%) and two in the AL group (9.5%) had a side to side difference in laxity greater 5 mm. Patient reported outcomes did not differ between groups and no patients underwent revision surgery., Conclusions: The adjustable-length cortical suspension device (AL) did not demonstrate increased laxity as compared to fixed-length devices. There was no difference in patient reported outcomes between the groups. Level of Evidence: IV ., Competing Interests: Disclosures: The authors report no potential conflicts of interest related to this study., (Copyright © The Iowa Orthopaedic Journal 2020.)
- Published
- 2020
49. The Role of Medial Patellofemoral Ligament Repair and Imbrication.
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Duchman KR and Bollier MJ
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- Humans, Joint Instability diagnostic imaging, Medial Collateral Ligament, Knee diagnostic imaging, Medial Collateral Ligament, Knee injuries, Osteotomy, Patellofemoral Joint diagnostic imaging, Patellofemoral Joint injuries, Joint Instability surgery, Medial Collateral Ligament, Knee surgery, Patellofemoral Joint surgery, Plastic Surgery Procedures methods
- Abstract
Repair, reefing, and advancement of the medial patellofemoral ligament (MPFL) and medial retinacular structures can be performed as an isolated procedure or in conjunction with distal realignment procedures for patients with patellar instability. Although various operative techniques have been described, understanding the appropriate clinical indications and MPFL injury patterns ultimately determines the success or failure of the procedure. MPFL repair is best indicated in the acute setting, particularly if there is a patella- or femoral-based avulsion. If MPFL repair is being considered, and there is no evidence of avulsion on plain radiographs, magnetic resonance imaging can be used to examine the pattern and extent of the MPFL injury. In cases of chronic patellar instability, medial retinacular reefing or imbrication is best considered in conjunction with other procedures that address common pathology associated with chronic instability. These procedures include distal realignment, trochleoplasty, and distal femoral osteotomy., Competing Interests: Authors’ Disclosure Statement: The authors report no actual or potential conflict of interest in relation to this article.
- Published
- 2017
50. Injuries in Collegiate Wrestlers at an Elite Division I NCAA Wrestling Program: An Epidemiological Study.
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Otero JE, Graves CM, and Bollier MJ
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- Athletic Injuries surgery, Databases, Factual, Humans, Male, Prevalence, Retrospective Studies, Universities, Young Adult, Athletic Injuries epidemiology, Wrestling injuries
- Abstract
Background: Injury is common in the sport of wrestling. More than 6000 athletes compete in NCAA wrestling yearly. Despite this popularity, little is known about the epidemiology of wrestlers' injuries and factors affecting return to competition. We hypothesized that patterns of injury and associated factors influence return to participation., Methods: Retrospective database review of one Division I NCAA wrestling program over nine seasons (2002 to 2011)., Results: From 2002 to 2011, 125 wrestlers were varsity participants at a single NCAA Division I program. Among these wrestlers, there were 4275 exposures per year on average. We identified 1034 musculoskeletal injuries, skin injuries, and concussions in 120 athletes (96% of participants). Eighty-two percent of athletes missed at least one day secondary to these injuries, while 69% were unable to compete in at least one match. The injury rate was estimated at 19.6 (SD 16.5) per 1000 exposures. The rate of injuries requiring surgery was estimated at 1.4 (SD 2.1) per 1000 exposures. Weight class, record, age at injury, and eligibility status did not affect the rate or type of injury. A significant difference was noted in the athletes who returned to competition following surgery. Athletes who returned to competition after surgical treatment for an injury ultimately competed in more matches (62.4 vs 18.2, p < 0.001), had more wins (45.2 vs 12.1, p<0.001) and a higher win percentage (67.5 vs 51.2 p < 0.01) than those who did not return following surgery., Conclusion: Return to competition in collegiate wrestling is dependent on many factors in addition to severity of injury and surgery type. There is a positive association between return to sport and success as a collegiate wrestler. Our findings will be helpful to wrestlers and coaches in guiding expectations after injury. Level of Evidence: Level 4 diagnostic.
- Published
- 2017
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