American Journal of Sports Medicine

Alan M J Getgood, Dianne M Bryant, Robert Litchfield, Mark Heard, Robert G McCormack, Alex Rezansoff, Devin Peterson, Davide Bardana, Peter B MacDonald, Peter C M Verdonk, Tim Spalding, Kevin Willits, Trevor Birmingham, Chris Hewison, Stacey Wanlin, Andrew Firth, Ryan Pinto, Ashley Martindale, Lindsey O'Neill, Morgan Jennings, Michal Daniluk, Dory Boyer, Mauri Zomar, Karyn Moon, Raely Pritchett, Krystan Payne, Brenda Fan, Bindu Mohan, Gregory M Buchko, Laurie A Hiemstra, Sarah Kerslake, Jeremy Tynedal, Greg Stranges, Sheila Mcrae, LeeAnne Gullett, Holly Brown, Alexandra Legary, Alison Longo, Mat Christian, Celeste Ferguson, Nick Mohtadi, Rhamona Barber, Denise Chan, Caitlin Campbell, Alexandra Garven, Karen Pulsifer, Michelle Mayer, Nicole Simunovic, Andrew Duong, David Robinson, David Levy, Matt Skelly, Ajaykumar Shanmugaraj, Fiona Howells, Murray Tough, Tim Spalding, Pete Thompson, Andrew Metcalfe, Laura Asplin, Alisen Dube, Louise Clarkson, Jaclyn Brown, Alison Bolsover, Carolyn Bradshaw, Larissa Belgrove, Francis Millan, Sylvia Turner, Sarah Verdugo, Janet Lowe, Debra Dunne, Kerri McGowan, Charlie-Marie Suddens, Geert Declercq, Kristien Vuylsteke, Mieke Van Haver
BACKGROUND: Persistent anterolateral rotatory laxity after anterior cruciate ligament (ACL) reconstruction (ACLR) has been correlated with poor clinical outcomes and graft failure. HYPOTHESIS: We hypothesized that a single-bundle, hamstring ACLR in combination with a lateral extra-articular tenodesis (LET) would reduce the risk of ACLR failure in young, active individuals. STUDY DESIGN: Randomized controlled trial; Level of evidence, 1. METHODS: This is a multicenter, prospective, randomized clinical trial comparing a single-bundle, hamstring tendon ACLR with or without LET performed using a strip of iliotibial band...
January 15, 2020: American Journal of Sports Medicine
Travis J Dekker, Lucca Lacheta, Brandon T Goldenberg, Marilee P Horan, Jonas Pogorzelski, Peter J Millett
BACKGROUND: Osteoarthritis of the sternoclavicular (SC) joint is a rare condition that leads to decreased function and persistent pain, ultimately altering the function of the shoulder and keeping individuals from their desired activities. SC resection in the setting of primary and posttraumatic osteoarthritis is the most common surgical treatment for these patients, but midterm results are lacking. PURPOSE/HYPOTHESIS: The purpose was to assess the clinical outcomes, pain levels, return to sports rate, and survivorship after open SC joint resection in the setting of painful primary SC joint osteoarthritis...
January 15, 2020: American Journal of Sports Medicine
Qi You, Ziming Liu, Jun Zhang, Mengjie Shen, Yuwan Li, Ying Jin, Yi Liu
BACKGROUND: Human amniotic mesenchymal stem cells (hAMSCs) are being widely applied in various fields. Therefore, hAMSCs represent a promising candidate to facilitate cartilage regeneration. Nonetheless, no studies have investigated the application of hAMSC sheets to repair cartilage defects in vivo. PURPOSE: To evaluate hAMSC sheets encapsulating cartilage particles to promote repair of rabbit osteochondral defects. STUDY DESIGN: Controlled laboratory study...
January 15, 2020: American Journal of Sports Medicine
Jean-Romain Delaloye, Jozef Murar, Thais D Vieira, Florent Franck, Charles Pioger, Lionel Helfer, Adnan Saithna, Bertrand Sonnery-Cottet
BACKGROUND: Cyclops syndrome is characterized by a symptomatic extension deficit attributed to impingement of a cyclops lesion within the intercondylar notch. The syndrome is an important cause of reoperation after anterior cruciate ligament reconstruction (ACLR). It has been suggested that remnant-preserving ACLR techniques may predispose to cyclops syndrome, but there is very limited evidence to support this. In general terms, risk factors for cyclops syndrome are not well-understood...
January 13, 2020: American Journal of Sports Medicine
Yucheng Sun, Jae-Man Kwak, Erica Kholinne, Youlang Zhou, Jun Tan, Kyoung Hwan Koh, In-Ho Jeon
BACKGROUND: Microfracture of the greater tuberosity has been proved effective for enhancing tendon-to-bone healing after rotator cuff repair. However, no standard diameter for the microfracture has been established. PURPOSE/HYPOTHESIS: This study aimed to assess treatment with large- and small-diameter microfractures to enhance healing during rotator cuff repair surgery in a rabbit model of chronic rotator cuff tear. It was hypothesized that a small-diameter microfracture had advantages in terms of tendon-to-bone integration, bone-tendon interface maturity, microfracture healing, and biomechanical properties compared with a large-diameter microfracture...
January 13, 2020: American Journal of Sports Medicine
Jeffrey D Hassebrock, Anikar Chhabra, Justin L Makovicka, Kostas J Economopoulos
BACKGROUND: Hip arthroscopy is a safe and effective mechanism for treating femoroacetabular impingement symptoms in high level athletes. Bilateral symptoms occur in a subset of this population. PURPOSE: To discuss outcomes of bilateral hip arthroscopy in high-level athletes and compare a standard staged timeline for bilateral hip arthroscopic surgery versus an accelerated timeline. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: A retrospective review of all staged bilateral hip arthroscopies was performed on high-level athletes over a 3-year period...
January 13, 2020: American Journal of Sports Medicine
Olivia C O'Reilly, Molly A Day, William T Cates, Jaqueline E Baron, Natalie A Glass, Robert W Westermann
BACKGROUND: Although a sex-based balance in US graduate medical education has been well-documented, a discrepancy remains in orthopaedic surgery. In orthopaedic sports medicine, the representation of women as team physicians has not previously been characterized. PURPOSE: To quantify the sex-related composition of team physicians of select National Collegiate Athletic Association (NCAA) Division I collegiate and professional teams. Additionally, the authors assess the sex-related composition of orthopaedic surgeon team physicians specifically and compare these proportions to the sex-related composition of orthopaedic surgeon membership of the American Orthopaedic Society for Sports Medicine (AOSSM)...
January 10, 2020: American Journal of Sports Medicine
Jun Zhou, Heath P Melugin, Rena F Hale, Devin P Leland, Christopher D Bernard, Bruce A Levy, Aaron J Krych
BACKGROUND: Radiography is the initial imaging modality used to evaluate femoroacetabular impingement (FAI), and diagnostic radiographic findings are well-established. However, the prevalence of these radiographic findings in patients with hip pain is unknown. PURPOSE: The purpose was 3-fold: (1) to determine the overall prevalence of radiographic FAI deformities in young patients presenting with hip pain, (2) to identify the most common radiographic findings in patients with cam-type FAI, and (3) to identify the most common radiographic findings in patients with pincer-type FAI...
January 10, 2020: American Journal of Sports Medicine
Kurt P Spindler, Laura J Huston, Alexander Zajichek, Emily K Reinke, Annunziato Amendola, Jack T Andrish, Robert H Brophy, Warren R Dunn, David C Flanigan, Morgan H Jones, Christopher C Kaeding, Robert G Marx, Matthew J Matava, Eric C McCarty, Richard D Parker, Armando F Vidal, Michelle L Wolcott, Brian R Wolf, Rick W Wright
BACKGROUND: Physicians' and patients' decision-making process between bone-patellar tendon-bone (BTB) and hamstring tendon autografts for anterior cruciate ligament (ACL) reconstruction (ACLR) may be influenced by a variety of factors in the young, active athlete. PURPOSE: To determine the incidence of both ACL graft revisions and contralateral ACL tears resulting in subsequent ACLR in a cohort of high school- and college-aged athletes who initially underwent primary ACLR with either a BTB or a hamstring autograft...
January 9, 2020: American Journal of Sports Medicine
Jakob Ackermann, Alexandre Barbieri Mestriner, Courtney VanArsdale, Andreas H Gomoll
BACKGROUND: Recently, a cell identity assay has been introduced to evaluate the identity of cultured chondrocytes before autologous chondrocyte implantation (ACI), which was shown to be associated with graft survival after ACI. PURPOSE: To identify the influence of several patient- and lesion-specific factors on cell identity and viability assays. STUDY DESIGN: Cross-sectional study; Level of evidence, 3. METHODS: A total of 187 patients with second-generation ACI were included in this study...
January 9, 2020: American Journal of Sports Medicine
Philipp R Heuberer, Leo Pauzenberger, Michael S Gruber, Roman C Ostermann, Michael Hexel, Brenda Laky, Werner Anderl
BACKGROUND: The rotator cuff is known to consist of 2 macroscopically visible layers that have different biomechanical properties. Sometimes the inferior layer may be neglected during rotator cuff repair. However, it is controversial whether double-layer (DL) repair is superior to single-layer (SL) repair in terms of retear rate and outcome. PURPOSE: To investigate whether DL as compared with SL repair could decrease retear rates after arthroscopic reconstruction of posterosuperior rotator cuff tears...
January 9, 2020: American Journal of Sports Medicine
David L Bernholt, Nicholas N DePhillipo, Matthew D Crawford, Zachary S Aman, W Jeffrey Grantham, Robert F LaPrade
BACKGROUND: Bone bruising of the posterolateral tibial plateau and the lateral femoral condyle sulcus terminalis has a well-established association with anterior cruciate ligament (ACL) tears. Impaction fractures of the femur and tibia may occur in these locations; however, there is a paucity of literature describing these fractures. PURPOSE: The primary objective was to quantify the incidence, size, and location of impaction fractures of the posterolateral tibial plateau and lateral femoral condyle in patients with primary ACL tears...
January 9, 2020: American Journal of Sports Medicine
Matthew J Best, Miho J Tanaka, Shadpour Demehri, Andrew J Cosgarea
BACKGROUND: Abnormal patellar tracking is described as a "J-sign" when the patella exhibits excessive lateral displacement during active knee extension. PURPOSE: To determine (1) the accuracy and reliability of the visual assessment of patellar tracking when viewed by surgeons with patellofemoral expertise and (2) whether surgeon experience (in years) correlates with the ability to accurately identify the presence and severity of patellar maltracking. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2...
January 8, 2020: American Journal of Sports Medicine
Mikhail Golman, Margaret L Wright, Tony T Wong, T Sean Lynch, Christopher S Ahmad, Stavros Thomopoulos, Charles A Popkin
BACKGROUND: Patellar tendinopathy is an overuse injury of the patellar tendon frequently affecting athletes involved in jumping sports. The tendinopathy may progress to partial patellar tendon tears (PPTTs). Current classifications of patellar tendinopathy are based on symptoms and do not provide satisfactory evidence-based treatment guidelines. PURPOSE: To define the relationship between PPTT characteristics and treatment guidelines, as well as to develop a magnetic resonance imaging (MRI)-based classification system for partial patellar tendon injuries...
January 8, 2020: American Journal of Sports Medicine
Alberto Grassi, Luca Macchiarola, Gian Andrea Lucidi, Federico Stefanelli, Mariapia Neri, Annamaria Silvestri, Francesco Della Villa, Stefano Zaffagnini
BACKGROUND: Failure of anterior cruciate ligament (ACL) reconstruction or an injury to the ACL in the contralateral knee represents a devastating event for patients, especially those young and physically active. However, controversies are still present regarding long-term failure rates and risk factors. PURPOSE: To assess the long-term rate of ipsilateral graft failure and contralateral ACL injuries after ACL reconstruction performed at a single center using the same surgical technique with a hamstring autograft and to investigate the effect of sex, age, and preinjury activity level as predictors of second ACL injuries...
January 7, 2020: American Journal of Sports Medicine
Deborah J Li, John C Clohisy, Maria T Schwabe, Elizabeth L Yanik, Cecilia Pascual-Garrido
BACKGROUND: No previous study has investigated how the Patient-Reported Outcomes Measurement Information System (PROMIS) performs compared with legacy patient-reported outcome measures in patients with symptomatic acetabular dysplasia treated with periacetabular osteotomy (PAO). PURPOSE: To (1) measure the strength of correlation between the PROMIS and legacy outcome measures and (2) assess floor and ceiling effects of the PROMIS and legacy outcome measures in patients treated with PAO for symptomatic acetabular dysplasia...
January 7, 2020: American Journal of Sports Medicine
David L Bernholt, Nicholas N DePhillipo, W Jeffrey Grantham, Matthew D Crawford, Zachary S Aman, Mitchell Iung Kennedy, Robert F LaPrade
BACKGROUND: Impaction fractures of the posterolateral tibial plateau commonly occur in the setting of anterior cruciate ligament (ACL) tears, with considerable variability found in fracture size and morphologic features. PURPOSE: The primary objective was to characterize different morphologic variants of posterolateral tibial plateau impaction fractures. The secondary objective was to investigate the association between these impaction fracture variants and concomitant meniscal and ligamentous injuries...
January 3, 2020: American Journal of Sports Medicine
Betina B Hinckel, Eli L Pratte, Charles A Baumann, Anirudh K Gowd, Jack Farr, Joseph N Liu, Adam B Yanke, Jorge Chahla, Seth L Sherman
BACKGROUND: Many surgical options for treating patellofemoral (PF) cartilage lesions are available but with limited evidence comparing their results. PURPOSE: To determine and compare outcomes of PF cartilage restoration techniques. STUDY DESIGN: Systematic review and meta-analysis. METHODS: PRISMA (Preferred Reporting Items for Systematic Meta-Analyses) guidelines were followed by utilizing the PubMed, EMBASE, and Cochrane Library databases...
January 3, 2020: American Journal of Sports Medicine
Kostas J Economopoulos, Anikar Chhabra, Christopher Kweon
BACKGROUND: Capsular management during hip arthroscopy remains controversial. Studies evaluating this topic consist mostly of retrospective comparative reviews of prospectively gathered data on a large series of patients. PURPOSE/HYPOTHESIS: The purpose was to perform a prospective randomized trial to comparatively assess 3 commonly performed capsular management techniques. It was hypothesized that capsular closure during hip arthroscopy would result in superior outcomes when compared with unclosed capsulotomy management techniques...
December 31, 2019: American Journal of Sports Medicine
Justin M Chan, John Zajac, Brandon J Erickson, David W Altchek, Christopher Camp, Struan H Coleman, Joshua S Dines
BACKGROUND: Loss of upper and lower extremity range of motion (ROM) is a significant risk factor for injuries in professional baseball players. PURPOSE/HYPOTHESIS: The purpose was to determine changes in ROM in professional baseball players over the course of a single season and their careers. We hypothesized that pitchers and position players would lose ROM, specifically total shoulder motion (total ROM [TROM]) and hip internal rotation (IR), over the course of a season and their careers...
December 31, 2019: American Journal of Sports Medicine
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