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American Journal of Sports Medicine

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https://www.readbyqxmd.com/read/30015510/partial-controlled-early-postoperative-weightbearing-versus-nonweightbearing-after-reconstruction-of-the-fibular-lateral-collateral-ligament-a-randomized-controlled-trial-and-equivalence-analysis
#1
Robert F LaPrade, Nicholas N DePhillipo, Tyler R Cram, Mark E Cinque, Mitchell I Kennedy, Grant J Dornan, Luke T O'Brien
BACKGROUND: While early weightbearing protocols have been advocated after anterior cruciate ligament (ACL) reconstruction, early weightbearing after fibular (lateral) collateral ligament reconstruction has not been well defined. PURPOSE: (1) To determine if early partial controlled weightbearing after fibular collateral ligament (FCL) reconstruction resulted in an objective difference in laxity on varus stress radiographs at postoperative 6 months as compared with nonweightbearing, and (2) to determine if there was a difference in pain, edema, range of motion, and subjective patient-reported outcomes between these groups at 3 time points...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30015509/the-presence-and-degree-of-bone-marrow-edema-influence-midterm-clinical-outcomes-after-microfracture-for-osteochondral-lesions-of-the-talus
#2
Yoshiharu Shimozono, Eoghan T Hurley, Youichi Yasui, Timothy W Deyer, John G Kennedy
BACKGROUND: Subchondral bone marrow edema (BME) has been associated with articular cartilage loss, with the potential to be a negative prognostic indicator for clinical outcomes after microfracture. However, no single study has investigated the association between BME and clinical outcomes after microfracture for osteochondral lesions of the talus (OLTs) at midterm follow-up. PURPOSE: To clarify the association between postoperative subchondral BME and clinical outcomes in patients treated with microfracture for OLTs at both short-term and midterm follow-up using a grading system that classified the extent of BME of the talus...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30015504/risk-factors-and-outcomes-of-revision-arthroscopic-posterior-shoulder-capsulolabral-repair
#3
James P Bradley, Justin W Arner, Sachidhanand Jayakumar, Dharmesh Vyas
BACKGROUND: Risk factors and outcomes of revision arthroscopic posterior capsulolabral repair of the shoulder are currently not well defined. HYPOTHESIS: Athletes who require revision arthroscopic posterior unidirectional capsulolabral repair will have poorer outcomes and return to play when compared with those undergoing primary procedures, with risk factors including younger age, injury size, bone loss, and anchor number. STUDY DESIGN: Case-control study; Level of evidence, 3...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30015502/a-prospective-analysis-of-the-contralateral-hip-among-patients-with-femoroacetabular-impingement-what-are-the-risk-factors-for-disease-progression
#4
Craig R Louer, Gail Pashos, John C Clohisy, Jeffrey J Nepple
BACKGROUND: The pathophysiology of femoroacetabular impingement (FAI) remains to be better understood, including factors affecting symptom development and disease progression. PURPOSE: (1) To determine rates of initial and subsequent symptom development in the contralateral hip of patients with symptomatic FAI and (2) to identify predictors of the development of symptomatic contralateral FAI. STUDY DESIGN: Case-control study; Level of evidence, 3...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30015501/anterior-laxity-at-2-years-after-anterior-cruciate-ligament-reconstruction-is-comparable-when-using-adjustable-loop-suspensory-fixation-and-interference-screw-fixation
#5
Achilleas Boutsiadis, Jean-Claude Panisset, Brian M Devitt, Frédéric Mauris, Renaud Barthelemy, Johannes Barth
BACKGROUND: Adjustable-loop suspensory fixation (ALSF) devices are commonly used in anterior cruciate ligament reconstruction (ACLR). However, concern exists regarding the potential for lengthening under cyclical loads. PURPOSE: To compare the residual anterior laxity of 2 methods of femoral fixation, ALSF versus interference screw fixation, in patients undergoing isolated ACLR in the absence of meniscal injuries. To determine the preoperative risk factors associated with residual postoperative anterior laxity...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30010396/septic-arthritis-after-anterior-cruciate-ligament-reconstruction-how-important-is-graft-salvage
#6
Jonas Pogorzelski, Alexander Themessl, Andrea Achtnich, Erik M Fritz, Klaus Wörtler, Andreas B Imhoff, Knut Beitzel, Stefan Buchmann
BACKGROUND: Septic arthritis (SA) of the knee after anterior cruciate ligament reconstruction (ACLR) is a rare but potentially devastating condition. In certain cases, graft removal becomes necessary. PURPOSE: To evaluate clinical, subjective, and radiologic outcomes of patients with SA after ACLR and assess whether graft retention has superior clinical results as compared with graft removal. STUDY DESIGN: Cohort study; Level of evidence, 3...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30010388/delayed-rehabilitation-after-lateral-meniscal-allograft-transplantation-can-reduce-graft-extrusion-compared-with-standard-rehabilitation
#7
Dhong Won Lee, Ji Hwan Lee, Du Han Kim, Jin Goo Kim
BACKGROUND: Meniscal extrusion prevention would be important for restoring normal knee kinematics, even though the effect of graft extrusion after meniscal allograft transplantation (MAT) has not been clearly identified. HYPOTHESIS: When compared with standard rehabilitation protocols, delayed rehabilitation after lateral MAT could reduce graft extrusion. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: A total of 53 patients who underwent lateral MAT with the keyhole technique from June 2011 to March 2015 were included...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30010384/a-clinical-comparison-of-linear-and-surface-area-based-methods-of-measuring-glenoid-bone-loss
#8
Neil K Bakshi, George A Cibulas, Jon K Sekiya, Asheesh Bedi
BACKGROUND: The purpose of this study was to determine whether linear-based measurement significantly overestimates glenoid bone loss in comparison with surface area-based measurement in patients with recurrent anterior shoulder instability and glenoid bone loss. HYPOTHESIS: Linear-based measurement will significantly overestimate glenoid bone loss in comparison with surface area-based measurement in patients with anterior shoulder instability and glenoid bone loss...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30001501/evidence-based-best-practice-guidelines-for-preventing-anterior-cruciate-ligament-injuries-in-young-female-athletes-a-systematic-review-and-meta-analysis
#9
Erich J Petushek, Dai Sugimoto, Michael Stoolmiller, Grace Smith, Gregory D Myer
BACKGROUND: Injury prevention neuromuscular training (NMT) programs reduce the risk for anterior cruciate ligament (ACL) injury. However, variation in program characteristics limits the potential to delineate the most effective practices to optimize injury risk reduction. PURPOSE: To evaluate the common and effective components included in ACL NMT programs and develop an efficient, user-friendly tool to assess the quality of ACL NMT programs. STUDY DESIGN: Systematic review and meta-analysis...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30001494/in-vitro-repair-of-meniscal-radial-tear-with-hydrogels-seeded-with-adipose-stem-cells-and-tgf-%C3%AE-3
#10
Hiroshi Sasaki, Benjamin B Rothrauff, Peter G Alexander, Hang Lin, Riccardo Gottardi, Freddie H Fu, Rocky S Tuan
BACKGROUND: Radial tears of the meniscus are a common knee injury, frequently resulting in osteoarthritis. To date, there are no established, effective treatments for radial tears. Adipose-derived stem cells (ASCs) may be an attractive cell source for meniscal regeneration because they can be quickly isolated in large number and are capable of undergoing induced fibrochondrogenic differentiation mediated by transforming growth factor β3 (TGF-β3). However, the use of ASCs for meniscal repair is largely unexplored...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29995442/internal-fixation-of-unstable-osteochondritis-dissecans-do-open-growth-plates-improve-healing-rate
#11
Isabella T Wu, Roel J H Custers, Vishal S Desai, Ayoosh Pareek, Michael J Stuart, Daniël B F Saris, Aaron J Krych
BACKGROUND: Osteochondritis dissecans (OCD) is a disorder of unknown origin that can affect knees in skeletally mature and immature patients. Surgical management is an important cornerstone of treatment for unstable OCD lesions. PURPOSE: To determine the (1) healing rate after internal fixation of unstable OCD between skeletally immature and mature knees, (2) risk factors for failure, and (3) patient-reported outcomes among healed patients. STUDY DESIGN: Cohort study; Level of evidence, 3...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29983091/graft-recipient-anteroposterior-mismatch-does-not-affect-the-midterm-clinical-outcomes-of-osteochondral-allograft-transplantation-of-the-femoral-condyle
#12
Dean Wang, Francesca R Coxe, George C Balazs, Brenda Chang, Kristofer J Jones, Scott A Rodeo, Riley J Williams
BACKGROUND: For the treatment of femoral condyle cartilage defects with osteochondral allograft transplantation (OCA), many surgeons have relaxed their graft-recipient size-matching criteria given the limited allograft supply. However, since the anteroposterior (AP) length is typically correlated with the radius of curvature for a given condyle, a large mismatch in graft-recipient AP length can indicate a corresponding mismatch in the radius of curvature, leading to articular incongruity after implantation...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29979610/kinematics-of-rugby-tackling-a-pilot-study-with-3-dimensional-motion-analysis
#13
Takayuki Kawasaki, Tanabe Yasumasa, Hiroshi Tanaka, Kenji Murakami, Nobukazu Maki, Hiroki Ozaki, Daisaku Hirayama, Masahiro Kunda, Katsuya Nobuhara, Toru Okuwaki, Kazuo Kaneko
BACKGROUND: Although improper tackling technique in rugby can affect the outcome of the tackle and lead to head, neck, and shoulder injuries, the effects of the height of the tackle or the side of the leading leg at the time of impact have not been investigated. Hypothesis/Purpose: The purpose was to characterize the trunk orientation at impact during various tackles. It was hypothesized that 3-dimensional motion analysis would be able to capture the critical kinematic differences in the 4 types of tackles studied...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29975557/epidemiology-of-upper-extremity-injuries-in-ncaa-men-s-and-women-s-ice-hockey
#14
Patricia R Melvin, Spenser Souza, R Nelson Mead, Christopher Smith, Mary K Mulcahey
BACKGROUND: Ice hockey is a physically demanding sport where athletes are susceptible to a variety of injuries. Several studies reported the overall injury rates in ice hockey; however, there is a paucity of information on upper extremity (UE) injuries among collegiate ice hockey players. PURPOSE: To describe the epidemiology of UE injuries among collegiate male and female ice hockey players with NCAA (National Collegiate Athletic Association) injury surveillance data from 2004-2005 to 2013-2014...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29975554/integrity-of-the-untorn-articular-sided-tendon-in-bursal-sided-partial-thickness-rotator-cuff-tear-a-comparative-study-of-apoptotic-activity-in-torn-and-untorn-layers
#15
Hyo Yang, Hyo-Jin Lee, Yun-Gyoung Lee, Jang-Woon Kim, Yang-Soo Kim
BACKGROUND: Conversion to full-thickness tear in partial-thickness rotator cuff tears (PTRCTs) is based on the quality and thickness of the normal-looking untorn rotator cuff layer. However, whether the untorn tendon is a healthy tissue remains to be elucidated. PURPOSE: To compare the apoptotic gene expression of the untorn articular layer with the torn bursal layer in PTRCTs. STUDY DESIGN: Controlled laboratory study. METHODS: Tendon tissues were harvested from 20 patients undergoing arthroscopic surgery for partial-thickness rotator cuff repair...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29975549/biomechanical-strength-of-rotator-cuff-repairs-a-systematic-review-and-meta-regression-analysis-of-cadaveric-studies
#16
Brendan Y Shi, Miguel Diaz, Matthew Binkley, Edward G McFarland, Uma Srikumaran
BACKGROUND: Biomechanical cadaveric studies of rotator cuff repair (RCR) have shown that transosseous equivalent and double-row anchored repairs are stronger than other repair constructs. PURPOSE: To identify technical and procedural parameters that most reliably predict biomechanical performance of RCR constructs. STUDY DESIGN: Systematic review. METHODS: The authors systematically searched the EMBASE and PubMed databases for biomechanical studies that measured RCR performance in cadaveric specimens...
July 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29985051/the-incidence-of-glenohumeral-bone-and-cartilage-lesions-at-the-time-of-anterior-shoulder-stabilization-surgery-a-comparison-of-patients-undergoing-primary-and-revision-surgery
#17
Kyle R Duchman, Carolyn M Hettrich, Natalie A Glass, Robert W Westermann, Brian R Wolf, Keith Baumgarten, Julie Bishop, Jonathan Bravman, Robert Brophy, James Carpenter, Grant Jones, John Kuhn, C Benjamin Ma, Robert Marx, Eric McCarty, Bruce Miller, Matthew Smith, McCarty Eric, Bruce Miller, Matthew Smith, Rick Wright, Alan Zhang
BACKGROUND: Intra-articular glenohumeral joint changes frequently occur after shoulder instability events. PURPOSE: (1) To compare demographic characteristics, baseline patient-reported outcomes, and intraoperative findings for patients undergoing primary or revision shoulder stabilization surgery and (2) to determine the incidence of glenohumeral bone and cartilage lesions in this population while identifying factors independently associated with these lesions...
June 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29969043/first-in-human-pilot-study-of-implantation-of-a-scaffold-free-tissue-engineered-construct-generated-from-autologous-synovial-mesenchymal-stem-cells-for-repair-of-knee-chondral-lesions
#18
Kazunori Shimomura, Yukihiko Yasui, Kota Koizumi, Ryota Chijimatsu, David A Hart, Yasukazu Yonetani, Wataru Ando, Takashi Nishii, Takashi Kanamoto, Shuji Horibe, Hideki Yoshikawa, Norimasa Nakamura, Morito Sakaue, Norihiko Sugita, Yu Moriguchi
BACKGROUND: Articular cartilage has limited healing capacity, owing in part to poor vascularity and innervation. Once injured, it cannot be repaired, typically leading to high risk for developing osteoarthritis. Thus, cell-based and/or tissue-engineered approaches have been investigated; however, no approach has yet achieved safety and regenerative repair capacity via a simple implantation procedure. PURPOSE: To assess the safety and efficacy of using a scaffold-free tissue-engineered construct (TEC) derived from autologous synovial membrane mesenchymal stem cells (MSCs) for effective cartilage repair...
June 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29965789/the-ruptured-achilles-tendon-elongates-for-6-months-after-surgical-repair-regardless-of-early-or-late-weightbearing-in-combination-with-ankle-mobilization-a-randomized-clinical-trial
#19
Pernilla Eliasson, Anne-Sofie Agergaard, Christian Couppé, René Svensson, Rikke Hoeffner, Susan Warming, Nichlas Warming, Christina Holm, Mikkel Holm Jensen, Michael Krogsgaard, Michael Kjaer, S Peter Magnusson
BACKGROUND: Treatment strategies for Achilles tendon rupture vary considerably, and clinical outcome may depend on the magnitude of tendon elongation after surgical repair. The aim of this project was to examine whether tendon elongation, mechanical properties, and functional outcomes during rehabilitation of surgically repaired acute Achilles tendon ruptures were influenced by different rehabilitation regimens during the early postsurgical period. HYPOTHESIS: Restricted early weightbearing that permits only limited motion about the ankle in the early phase of tendon healing limits tendon elongation and improves functional outcome...
June 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29963905/the-natural-history-of-full-thickness-rotator-cuff-tears-in-randomized-controlled-trials-a-systematic-review-and-meta-analysis
#20
Chetan Khatri, Imran Ahmed, Helen Parsons, Nicholas A Smith, Thomas M Lawrence, Chetan S Modi, Stephen J Drew, Gev Bhabra, Nicholas R Parsons, Martin Underwood, Andrew J Metcalfe
BACKGROUND: Rotator cuff tears are the most common tendon injury in the adult population, resulting in substantial morbidity. The optimum management for these patients is not known. PURPOSE: To assess the overall treatment response to all interventions in full-thickness rotator cuff tears among patients enrolled in randomized clinical trials. STUDY DESIGN: Systematic review and meta-analysis. METHODS: Randomized controlled trials (RCTs) were identified from a systematic search of Medline, Embase, CINHAL, and the Cochrane Central Register of Controlled Trials...
June 1, 2018: American Journal of Sports Medicine
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