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Orthopaedic Journal of Sports Medicine

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https://www.readbyqxmd.com/read/29687013/effects-of-game-pitch-count-and-body-mass-index-on-pitching-biomechanics-in-9-to-10-year-old-baseball-athletes
#1
Jim D Darke, Eshan M Dandekar, Arnel L Aguinaldo, Scott J Hazelwood, Stephen M Klisch
Background: Pitching while fatigued and body composition may increase the injury risk in youth and adult pitchers. However, the relationships between game pitch count, biomechanics, and body composition have not been reported for a study group restricted to 9- to 10-year-old athletes. Hypothesis: During a simulated game with 9- to 10-year-old athletes, (1) participants will experience biomechanical signs of fatigue, and (2) shoulder and elbow kinetics will correlate with body mass index (BMI)...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29687012/sex-based-differences-of-medial-collateral-ligament-and-anterior-cruciate-ligament-strains-with-cadaveric-impact-simulations
#2
Nathan D Schilaty, Nathaniel A Bates, Christopher V Nagelli, Aaron J Krych, Timothy E Hewett
Background: Female patients sustain noncontact knee ligament injuries at a greater rate compared with their male counterparts. The cause of these differences in the injury rate and the movements that load the ligaments until failure are still under dispute in the literature. Purpose/Hypotheses: This study was designed to determine differences in anterior cruciate ligament (ACL) and medial collateral ligament (MCL) strains between male and female cadaveric specimens during a simulated athletic task...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29687011/incidence-of-elbow-ulnar-collateral-ligament-surgery-in-collegiate-baseball-players
#3
Marcus A Rothermich, Stan A Conte, Kyle T Aune, Glenn S Fleisig, E Lyle Cain, Jeffrey R Dugas
Background: Recent reports have highlighted the progressive increase in the incidence of ulnar collateral ligament (UCL) injuries to the elbow in baseball players of all levels. However, knowledge of the incidence and other epidemiological factors regarding UCL injuries, specifically in college baseball players, is currently lacking. Purpose: To evaluate, over a period of 1 year, the incidence of UCL injuries requiring surgery in National Collegiate Athletic Association (NCAA) Division I baseball programs...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29662915/patient-perspectives-of-midlevel-providers-in-orthopaedic-sports-medicine
#4
Blaine T Manning, Daniel D Bohl, Charles P Hannon, Michael L Redondo, David R Christian, Brian Forsythe, Shane J Nho, Bernard R Bach
Background: Midlevel providers (eg, nurse practitioners and physician assistants) have been integrated into orthopaedic systems of care in response to the increasing demand for musculoskeletal care. Few studies have examined patient perspectives toward midlevel providers in orthopaedic sports medicine. Purpose: To identify perspectives of orthopaedic sports medicine patients regarding midlevel providers, including optimal scope of practice, reimbursement equity with physicians, and importance of the physician's midlevel provider to patients when initially selecting a physician...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29662914/ligament-strain-response-between-lower-extremity-contralateral-pairs-during-in-vitro-landing-simulation
#5
April L McPherson, Nathanial A Bates, Nathan D Schilaty, Christopher V Nagelli, Aaron J Krych, Timothy E Hewett
Background: Limb asymmetries, as determined through in vivo biomechanical measures, are known risk factors for anterior cruciate ligament (ACL) injury. Previous cadaveric studies have shown a lack of significant differences in ligament strain between contralateral lower extremities when identical kinematics were simulated on specimens. Recent methodological developments have applied in vivo knee kinetics to exert landing forces on cadaveric lower extremities to mimic ACL injury events, but it is unknown whether contralateral limbs fail in a consistent manner during impact simulator testing...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29662913/high-rate-of-missed-lateral-meniscus-posterior-root-tears-on-preoperative-magnetic-resonance-imaging
#6
Aaron J Krych, Isabella T Wu, Vishal S Desai, Naveen S Murthy, Mark S Collins, Daniel B F Saris, Bruce A Levy, Michael J Stuart
Background: Lateral meniscus posterior root tears (LMPRTs), if left untreated, can cause devastating effects to the knee, with rapid articular cartilage degeneration and loss of the meniscus as a secondary stabilizer. Detection and surgical repair of these defects have been linked to favorable outcomes, but preoperative identification of LMPRTs continues to be challenging. Purpose: To determine the rate of LMPRTs diagnosed preoperatively on magnetic resonance imaging (MRI) in a consecutive series of arthroscopically confirmed LMPRTs...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29662912/relationship-between-quantitative-mri-biomarkers-and-patient-reported-outcome-measures-after-cartilage-repair-surgery-a-systematic-review
#7
REVIEW
Drew A Lansdown, Kevin Wang, Eric Cotter, Annabelle Davey, Brian J Cole
Background: Treatment of articular cartilage injuries remains a clinical challenge, and the optimal tools to monitor and predict clinical outcomes are unclear. Quantitative magnetic resonance imaging (qMRI) allows for a noninvasive biochemical evaluation of cartilage and may offer advantages in monitoring outcomes after cartilage repair surgery. Hypothesis: qMRI sequences will correlate with early pain and functional measures. Study Design: Systematic review; Level of evidence, 3...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29662911/unaccounted-workload-factor-game-day-pitch-counts-in-high-school-baseball-pitchers-an-observational-study
#8
Jason L Zaremski, Giorgio Zeppieri, Deborah L Jones, Brady L Tripp, Michelle Bruner, Heather K Vincent, MaryBeth Horodyski
Background: Throwing injuries are common in high school baseball. Known risk factors include excessive pitch counts, year-round pitching, and pitching with arm pain and fatigue. Despite the evidence, the prevalence of pitching injuries among high school players has not decreased. One possibility to explain this pattern is that players accumulate unaccounted pitch volume during warm-up and bullpen activity, but this has not yet been examined. Hypotheses: Our primary hypothesis was that approximately 30% to 40% of pitches thrown off a mound by high school pitchers during a game-day outing are unaccounted for in current data but will be revealed when bullpen sessions and warm-up pitches are included...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29662910/outcomes-and-return-to-sport-after-revision-anterior-cruciate-ligament-reconstruction-in-adolescent-athletes
#9
Michael Saper, Stephanie Pearce, Joseph Shung, Robert Zondervan, Roger Ostrander, James R Andrews
Background: The number of adolescent anterior cruciate ligament (ACL) injuries is rising with increased participation in higher level athletics at earlier ages. With an increasing number of primary ACL reconstructions (ACLRs) comes a rise in the incidence of revision ACLRs. Purpose: To evaluate the clinical results of revision ACLR across a group of high-level adolescent athletes with at least 2-year follow-up. Study Design: Case series; Level of evidence, 4...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29662909/development-and-validation-of-a-short-version-of-the-anterior-cruciate-ligament-return-to-sport-after-injury-acl-rsi-scale
#10
Kate E Webster, Julian A Feller
Background: The Anterior Cruciate Ligament Return to Sport After Injury (ACL-RSI) scale was developed to measure an athlete's psychological readiness to return to sport after anterior cruciate ligament (ACL) injury and reconstruction surgery. The scale is being used with increasing frequency in both research and clinical settings. Purpose: To generate and validate a short version of the ACL-RSI scale. Study Design: Cohort study (diagnosis); Level of evidence, 2...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29637085/clinical-outcomes-and-return-to-sport-after-arthroscopic-anterior-posterior-and-combined-shoulder-stabilization
#11
Matthew J Kraeutler, Nicholas S Aberle, Colin C Brown, Joseph J Ptasinski, Eric C McCarty
Background: Glenohumeral instability is a common abnormality, especially among athletes. Previous studies have evaluated outcomes after arthroscopic stabilization in patients with anterior or posterior shoulder instability but have not compared outcomes between groups. Purpose: To compare return-to-sport and other patient-reported outcomes in patients after primary arthroscopic anterior, posterior, and combined anterior and posterior shoulder stabilization. Study Design: Cohort study; Level of evidence, 3...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29637084/medicaid-health-insurance-status-limits-patient-accessibility-to-rehabilitation-services-following-acl-reconstruction-surgery
#12
Miranda J Rogers, Ian Penvose, Emily J Curry, Anthony DeGiacomo, Xinning Li
Background: In the senior author's (X.L.) orthopaedic sports medicine clinic in the United States (US), patients appear to have difficulty finding physical therapy (PT) practices that accept Medicaid insurance for postoperative rehabilitation. Purpose: To determine access to PT services for privately insured patients versus those with Medicaid who underwent anterior cruciate ligament (ACL) reconstruction in the largest metropolitan area in the state of Massachusetts, which underwent Medicaid expansion as part of the Affordable Care Act...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29637083/osseous-vascularity-of-the-medial-elbow-after-ulnar-collateral-ligament-reconstruction-a-comparison-of-the-docking-and-modified-jobe-techniques
#13
Christopher L Camp, Craig E Klinger, Lionel E Lazaro, Jordan C Villa, Jelle P van der List, David W Altchek, Dean G Lorich, Joshua S Dines
Background: Although vascularity plays a critical role in healing after ulnar collateral ligament (UCL) reconstruction, intraosseous blood flow to the medial epicondyle (ME) and sublime tubercle remains undefined. Purpose: To quantify vascular disruption caused by tunnel drilling with the modified Jobe and docking techniques for UCL reconstruction. Study Design: Controlled laboratory study. Methods: Eight matched pairs (16 specimens) of fresh-frozen cadaveric upper extremities were randomized to 1 of 2 study groups: docking technique or modified Jobe technique...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29637082/quantitative-anatomic-analysis-of-the-medial-ulnar-collateral-ligament-complex-of-the-elbow
#14
Christopher L Camp, Hamidreza Jahandar, Alec M Sinatro, Carl W Imhauser, David W Altchek, Joshua S Dines
Background: A more detailed assessment of the anatomy of the entire medial ulnar collateral ligament complex (MUCLC) is desired as the rate of medial elbow reconstruction surgery continues to rise. Purpose: To quantify the anatomy of the MUCLC, including the anterior bundle (AB), posterior bundle (PB), and transverse ligament (TL). Study Design: Descriptive laboratory study. Methods: Ten unpaired, fresh-frozen cadaveric elbows underwent 3-dimensional (3D) digitization and computed tomography with 3D reconstruction...
March 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29623283/does-the-rotator-cuff-tear-pattern-influence-clinical-outcomes-after-surgical-repair
#15
Scott Watson, Benjamin Allen, Chris Robbins, Asheesh Bedi, Joel J Gagnier, Bruce Miller
Background: Limited literature exists regarding the influence of rotator cuff tear morphology on patient outcomes. Purpose: To determine the effect of rotator cuff tear pattern (crescent, U-shape, L-shape) on patient-reported outcomes after rotator cuff repair. Study Design: Cohort study; Level of evidence, 3. Methods: Patients undergoing arthroscopic repair of known full-thickness rotator cuff tears were observed prospectively at regular intervals from baseline to 1 year...
March 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29623282/relationship-between-pitching-a-complete-game-and-spending-time-on-the-disabled-list-for-major-league-baseball-pitchers
#16
Brandon J Erickson, Peter N Chalmers, Anthony A Romeo, Christopher S Ahmad
Background: Injury rates among Major League Baseball pitchers have been increasing over the past several years. It is currently unknown whether pitching a complete game (CG) is a risk factor for spending time on the disabled list (DL). Purpose/Hypothesis: The purpose of this study was to determine the relationship between pitching a CG and time on the DL. We hypothesized that pitchers who threw a CG (1) would be at increased risk for spending time on the DL, which would be earlier in the season and for a longer period, than those who did not and (2) would be at further increased risk for spending time on the DL during subsequent seasons than matched controls...
March 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29623281/effect-of-head-impact-exposures-on-changes-in-cognitive-testing
#17
Eleni Diakogeorgiou, Theresa L Miyashita
Background: Gaining a better understanding of head impact exposures may lead to better comprehension of the possible effects of repeated impact exposures not associated with clinical concussion. Purpose: To assess the correlation between head impacts and any differences associated with cognitive testing measurements pre- and postseason. Study Design: Case-control study; Level of evidence, 3. Methods: A total of 34 National Collegiate Athletic Association Division I men's lacrosse players wore lacrosse helmets instrumented with an accelerometer during the 2014 competitive season and were tested pre- and postseason with the Sport Concussion Assessment Tool (SCAT 3) and Concussion Vital Signs (CVS) computer-based neurocognitive tests...
March 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29619398/functional-classification-of-the-medial-ulnar-collateral-ligament-an-in-vivo-kinematic-study-with-computer-aided-design
#18
Erica Kholinne, Rizki Fajar Zulkarnain, Hyun-Joo Lee, Arnold Adikrishna, In-Ho Jeon
Background: It has been widely accepted that the anterior and posterior bundles of the medial ulnar collateral ligament (MUCL) tighten at extension and flexion, respectively. However, this belief is based on anatomic data acquired from cadaveric studies. The advancement of 3-dimensional (3D) model technology has made possible the simulation of dynamic movement that includes each ligament bundle fiber to analyze its functional properties. To date, no study has analyzed ligament kinematics at the level of the fibers while also focusing on their functional properties...
March 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29619397/treatment-of-failed-articular-cartilage-reconstructive-procedures-of-the-knee-a-systematic-review
#19
REVIEW
Joseph D Lamplot, Kevin A Schafer, Matthew J Matava
Background: Symptomatic articular cartilage lesions of the knee are common and are being treated surgically with increasing frequency. While many studies have reported outcomes following a variety of cartilage restoration procedures, few have investigated outcomes of revision surgery after a failed attempt at cartilage repair or reconstruction. Purpose: To investigate outcomes of revision cartilage restoration procedures for symptomatic articular cartilage lesions of the knee following a previously failed cartilage reconstructive procedure...
March 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29619396/anthropometric-and-radiologic-measurements-of-coracoid-dimensions-and-clinical-implications-in-an-indian-population
#20
Deepak Joshi, Lalit Mohan Gupta, Milind Tanwar, Ajay Lal, Deepak Chaudhary
Background: Recurrent shoulder dislocation and anterior instability are most commonly attributed to pathology of the capsulolabral complex with the presence of bony loss at the humeral and glenoid surfaces. Unassessed bone loss has been a cause of failure of primary soft tissue procedures or recurrence of symptoms, despite adequate address of soft tissue pathology. Purpose: To study the anthropometric and radiologic dimensions of the coracoid in relation to glenoid bone loss, its adequacy in filling glenoid defects in an Indian population, and whether the choice of surgical technique (congruent arc vs classical) and graft positioning alters the surgical results...
March 2018: Orthopaedic Journal of Sports Medicine
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