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Niv Marom, Harry G Greditzer, Michael Roux, Daphne Ling, Caroline Boyle, Andrew D Pearle, Robert G Marx
BACKGROUND: Kaplan fibers are distinct deep layers of the distal iliotibial band (ITB) that anchor the ITB to the distal femur and have a role in rotational stability of the knee. However, the incidence of Kaplan fiber injury in the setting of acute anterior cruciate ligament (ACL) tear is unknown. PURPOSE: To determine the reliability of identifying and evaluating Kaplan fibers on magnetic resonance imaging (MRI) examinations based on previously reported characteristics and to report on the incidence of combined ACL and Kaplan fiber injuries based on MRI examinations...
September 24, 2020: American Journal of Sports Medicine
#2
Jilan L Shimberg, Julien T Aoyama, Tomasina M Leska, Theodore J Ganley, Peter D Fabricant, Neeraj M Patel, Aristides I Cruz, Henry B Ellis, Gregory A Schmale, Daniel W Green, Jason E Jagodzinski, Indranil Kushare, R Jay Lee, Scott McKay, Jason Rhodes, Brant Sachleben, Catherine Sargent, Yi-Meng Yen, R Justin Mistovich
BACKGROUND: There is a high rate of concomitant injuries reported in pediatric patients with tibial spine fractures, ranging from 40% to 68.8%. Many tibial spine fractures are treated without initial magnetic resonance imaging (MRI). PURPOSE: To understand rates of concomitant injury and if the reported rates of these injuries differed among patients with and without pretreatment MRI. STUDY DESIGN: Cross-sectional study; level of evidence, 3...
September 24, 2020: American Journal of Sports Medicine
#3
Olufemi R Ayeni, Jon Karlsson, Diane Heels-Ansdell, Lehana Thabane, Volker Musahl, Nicole Simunovic, Andrew Duong, Mohit Bhandari, Asheesh Bedi, Teppo Järvinen, Douglas Naudie, Matti Seppänen, Gerard Slobogean, Matthew Skelly, Ajay Shanmugaraj, Sarah Crouch, Sheila Sprague, Lisa Buckingham, Tim Ramsay, John Lee, Petteri Kousa, Sasha Carsen, Hema Choudur, Yan Sim, Kelly Johnston, Sheila Sprague, Ivan Wong, Ryland Murphy, Sara Sparavalo, Daniel Whelan, Ryan Khan, Gavin C A Wood, Fiona Howells, Heather Grant, Douglas Naudie, Bryn Zomar, Michael Pollock, Kevin Willits, Andrew Firth, Stacey Wanlin, Alliya Remtulla, Nicole Kaniki, Etienne L Belzile, Sylvie Turmel, Uffe Jørgensen, Annie Gam-Pedersen, Tays Hatanpää, Raine Sihvonen, Marko Raivio, Pirjo Toivonen, Mari Pirjetta Routapohja
BACKGROUND: Femoroacetabular impingement (FAI) is a condition known to cause hip pain in young adults. PURPOSE: To evaluate the efficacy of the surgical correction of FAI via arthroscopic osteochondroplasty with or without labral repair compared with arthroscopic lavage of the hip joint with or without labral repair. STUDY DESIGN: Randomized controlled trial; Level of evidence, 1. METHODS: A total of 220 male and female participants aged 18 to 50 years with nonarthritic FAI suitable for surgical treatment were recruited for the trial at 10 clinical centers in Canada, Finland, and Denmark between October 2012 and November 2017, of whom 214 were included in the final analysis...
September 24, 2020: American Journal of Sports Medicine
#4
Erica Kholinne, Jae-Man Kwak, Hyojune Kim, Kyoung Hwan Koh, In-Ho Jeon
BACKGROUND: Arthroscopic superior capsular reconstruction (ASCR) is an alternative to open surgery for irreparable chronic rotator cuff tears (RCTs). This approach can provide static restraint while avoiding upward migration of the humeral head. However, graft tears and their effect on clinical outcomes after ASCR remain a debated topic. PURPOSE: To evaluate the clinical outcomes of ASCR with mesh augmentation for the treatment of irreparable RCTs. STUDY DESIGN: Cohort study; Level of evidence, 3...
September 24, 2020: American Journal of Sports Medicine
#5
Niv Marom, Matthew S Dooley, Joost A Burger, Brenda Chang, Struan H Coleman, Anil S Ranawat, Bryan T Kelly, Danyal H Nawabi
BACKGROUND: Radiographic features of femoroacetabular impingement (FAI) are prevalent in kicking athletes, especially soccer players. However, there remains a paucity of data on the characteristics of symptomatic soccer players with an established diagnosis of FAI. PURPOSE: To report on patient demographics, injury, and clinical and radiographic characteristics in a large cohort of soccer players who underwent primary hip arthroscopy for FAI and to perform a sex- and competition level-specific analysis of these data...
September 23, 2020: American Journal of Sports Medicine
#6
Changgui Zhang, Yunong Ao, Jin Cao, Liu Yang, Xiaojun Duan
BACKGROUND: Particulated juvenile allograft cartilage (PJAC) has demonstrated good clinical efficacy in repairing articular cartilage defects, but the related repair mechanism after transplant and the biological characteristics of the transplanted cells are still unclear. PURPOSE: To study the efficacy of PJAC in repairing full-thickness cartilage defects and the specific fate of donor cells to provide experimental evidence for its clinical application. STUDY DESIGN: Controlled laboratory study...
September 23, 2020: American Journal of Sports Medicine
#7
James Belsey, Sam K Yasen, Simon Jobson, James Faulkner, Adrian J Wilson
BACKGROUND: The 2 most common definitive surgical interventions currently performed for the treatment of medial osteoarthritis of the knee are medial opening wedge high tibial osteotomy (HTO) and medial unicompartmental knee arthroplasty (UKA). Research exists to suggest that physically active patients may be suitably indicated for either procedure despite HTO being historically indicated in active patients and UKA being more appropriate for sedentary individuals. PURPOSE: To help consolidate the current indications for both procedures regarding physical activity and to ensure that they are based on the best information presently available...
September 22, 2020: American Journal of Sports Medicine
#8
Frans J A Hagemans, Freerk J Jonkers, Matthijs J J van Dam, Amber L von Gerhardt, Jelle P van der List
BACKGROUND: The short-term outcomes of anterior cruciate ligament (ACL) reconstruction with bone-patellar tendon-bone or hamstring tendon (HT) graft are excellent with good clinical stability and patient-reported outcomes. Although some studies have reported the long-term outcomes of bone-patellar tendon-bone graft ACL reconstruction, few have reported the outcomes of HT graft ACL reconstruction. PURPOSE: To assess clinical and radiographic outcomes of HT graft ACL reconstruction with femoral cortical button fixation at a minimum 20-year follow-up...
September 17, 2020: American Journal of Sports Medicine
#9
Ju-Ho Song, Seong-Il Bin, Jong-Min Kim, Bum-Sik Lee
BACKGROUND: Although joint-line obliquity (JLO) after open-wedge high tibial osteotomy (OWHTO) is commonly encountered, especially in cases of overcorrection, its effect has not been fully elucidated or has been assessed only in the short term. The acceptable range of JLO, often recognized as ≤4°, has not been determined as per the midterm outcomes of OWHTO. HYPOTHESIS: Joint-line obliquity exceeding the acceptable limit after OWHTO would accelerate cartilage degeneration and adversely affect midterm clinical outcomes...
September 17, 2020: American Journal of Sports Medicine
#10
Gergo Merkely, Jakob Ackermann, Evan M Farina, Courtney VanArsdale, Christian Lattermann, Andreas H Gomoll
BACKGROUND: Current regulations surrounding the use of osteochondral allografts (OCAs) in the United States require delayed graft release after 14 days to complete infectious disease screening. With a generally accepted expiration time of 28 days in storage, a limited window from 14 to 28 days remains for implantation. Yet, the rates of graft survival and thus optimal time for transplantation within this window remain largely unknown. HYPOTHESIS: OCAs transplanted within 19 to 24 days would have lower failure rates at 5 years than those transplanted at 25 to 27 days...
September 17, 2020: American Journal of Sports Medicine
#11
Hideyuki Sasanuma, Yuki Iijima, Tomohiro Saito, Yuichiro Yano, Sueo Nakama, Masahiro Kameda, Katsushi Takeshita
BACKGROUND: Osteochondral autograft transplant (OAT), a surgical treatment for capitellar osteochondritis dissecans (OCD), has favorable rates of elbow recovery and return to sports in adolescents. However, few reports have investigated how long patients continue to play baseball after OAT and their satisfaction with their treatment outcome. PURPOSE: To evaluate the rate of boys who played baseball and received OAT for OCD in junior high school or earlier (age <15 years) and continued to play baseball in high school and the players' satisfaction with their elbow function during play...
September 17, 2020: American Journal of Sports Medicine
#12
Jie Zhang, Shuchang Zhong, Tongcai Tan, Juebao Li, Shuang Liu, Ruidong Cheng, Liang Tian, Li Zhang, Yuanjiao Wang, Fei Liu, Panpan Zhou, Xiangming Ye
BACKGROUND: Frozen shoulder is a common shoulder disorder characterized by pain and restriction. Various nonsurgical treatments have been reported, but there is no consensus about their comparative efficacy and the effects of moderators. PURPOSE: To compare the efficacy of different nonsurgical interventions and identify potential patient-specific moderating factors for frozen shoulder. STUDY DESIGN: Systematic review and network meta-analysis...
September 17, 2020: American Journal of Sports Medicine
#13
Luca Andriolo, Davide Reale, Alessandro Di Martino, Roberto De Filippis, Andrea Sessa, Stefano Zaffagnini, Giuseppe Filardo
BACKGROUND: Matrix-assisted autologous chondrocyte transplantation (MACT) procedures have been developed to overcome some of the limits of first-generation autologous chondrocyte implantation. However, while good autologous chondrocyte implantation results have been documented over time, data are scarce on the long-term MACT results. PURPOSE: To evaluate long-term clinical results of a large cohort of patients treated with hyaluronic acid-based MACT for articular cartilage defects of the knee...
September 16, 2020: American Journal of Sports Medicine
#14
Thu Quynh Nguyen, James M Friedman, Sergio E Flores, Alan L Zhang
BACKGROUND: Patients experience varying degrees of pain and symptoms during the early recovery period after hip arthroscopy for femoroacetabular impingement (FAI). Some "fast starters" report minimal discomfort and are eager to advance activities, while "slow starters" describe severe pain and limitations. The relationship between these early postoperative symptoms and 2-year outcomes after hip arthroscopy is unknown. PURPOSE: To analyze the relationship between early postoperative pain and 2-year patient-reported outcomes (PROs) after hip arthroscopy for FAI...
September 15, 2020: American Journal of Sports Medicine
#15
Yaying Sun, Jinrong Lin, Zhiwen Luo, Jiwu Chen
BACKGROUND: Complete arthroscopic repair can treat small to large rotator cuff tears (RCTs) with good outcomes; however, the repair might be compromised by inflammation. PURPOSE: To investigate the prognostic value of preoperative lymphocyte to monocyte ratio (LMR), a marker of systemic inflammation before surgery, in arthroscopic rotator cuff repair. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: Between January 2014 and January 2016, primary small to large RCTs without stiffness, significant muscle fatty infiltration, or atrophy were completely repaired in 110 consecutive patients and followed...
September 15, 2020: American Journal of Sports Medicine
#16
Georges Haidamous, Matthew P Noyes, Patrick J Denard
BACKGROUND: Arthroscopic biceps tenodesis (ABT) high in the groove can be achieved using an inlay or an onlay technique. However, there is little information comparing outcomes between the 2. PURPOSE: To compare postoperative healing and functional outcomes of ABT high in the groove performed using either an onlay or an inlay technique. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: A retrospective study was performed on patients undergoing ABT at the articular margin (high in the groove) at a single center over a 2-year period...
September 14, 2020: American Journal of Sports Medicine
#17
Kristin Wilmoth, Brooke E Magnus, Michael A McCrea, Lindsay D Nelson
BACKGROUND: Symptom assessment is a critical component of concussion diagnosis and management, with item selection primarily driven by clinical judgment or expert consensus. We recently demonstrated that concussion symptoms assessed by the Sport Concussion Assessment Tool (SCAT) are essentially unidimensional, implying that overall symptom severity may be accurately estimated with relatively few questions. Briefer, evidence-based forms for symptom assessment would provide clinicians flexibility...
September 14, 2020: American Journal of Sports Medicine
#18
Prem N Ramkumar, Jaret M Karnuta, Heather S Haeberle, Spencer W Sullivan, Danyal H Nawabi, Anil S Ranawat, Bryan T Kelly, Benedict U Nwachukwu
BACKGROUND: The relationship between the preoperative radiographic indices for femoroacetabular impingement syndrome (FAIS) and postoperative patient-reported outcome measure (PROM) scores continues to be under investigation, with inconsistent findings reported. PURPOSE: To apply a machine learning model to determine which preoperative radiographic indices, if any, among patients indicated for the arthroscopic correction of FAIS predict whether a patient will achieve the minimal clinically important difference (MCID) for 1- and 2-year PROM scores...
September 14, 2020: American Journal of Sports Medicine
#19
Thomas J Kremen, Tina Stefanovic, Wafa Tawackoli, Khosrowdad Salehi, Pablo Avalos, Derek Reichel, Manuel J Perez, Juliane D Glaeser, Dmitriy Sheyn
BACKGROUND: There is a high incidence of posttraumatic osteoarthritis (PTOA) after anterior cruciate ligament (ACL) injury, and these injuries represent an enormous health care economic burden. In an effort to address this unmet clinical need, there has been increasing interest in cell-based therapies. PURPOSE: To establish a translational large animal model of PTOA and demonstrate the feasibility of intra-articular human cell-based interventions. STUDY DESIGN: Descriptive laboratory study...
September 14, 2020: American Journal of Sports Medicine
#20
Caleb D Johnson, Adam S Tenforde, Jereme Outerleys, Julia Reilly, Irene S Davis
BACKGROUND: Inconsistent associations have been reported for impact-related ground reaction force variables and running injuries when grouping all injuries together. However, previous work has shown more consistent associations when focusing on specific injuries. PURPOSE: To compare ground reaction force variables between healthy and injured runners as a group and within specific common injuries. STUDY DESIGN: Controlled laboratory study. METHODS: A total of 125 runners presenting with patellofemoral pain, tibial bone stress injury, plantar fasciitis, Achilles tendinopathy, or iliotibial band syndrome and 65 healthy controls completed an instrumented treadmill assessment at a self-selected speed...
September 11, 2020: American Journal of Sports Medicine
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