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American Journal of Sports Medicine

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https://read.qxmd.com/read/31518157/effect-of-fatty-acid-binding-protein-4-inhibition-on-rotator-cuff-muscle-quality-histological-biomechanical-and-biomolecular-analysis
#1
Yong-Soo Lee, Ja-Yeon Kim, Kwang Il Kim, Se-Young Ki, Seok Won Chung
BACKGROUND: A rotator cuff tear (RCT) induces fatty acid-binding protein 4 (FABP4) expression, resulting in ectopic fat accumulation in the rotator cuff muscle. PURPOSE: To evaluate whether FABP4 inhibition reduces fatty infiltration and improves muscle physiology after RCT in a rat model. STUDY DESIGN: Controlled laboratory study. METHODS: Human supraspinatus muscle and deltoid muscle tissues were acquired from patients with RCTs during arthroscopic surgery, and FABP4 expression in the supraspinatus muscle was evaluated as compared with the intact deltoid muscle...
September 13, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31518155/comparative-effectiveness-of-operative-versus-nonoperative-treatment-for-rotator-cuff-tears-a-propensity-score-analysis-from-the-row-cohort
#2
Nitin B Jain, Gregory D Ayers, Run Fan, John E Kuhn, Jon J P Warner, Keith M Baumgarten, Elizabeth Matzkin, Laurence D Higgins
BACKGROUND: The evidence to support operative versus nonoperative treatment for rotator cuff tears is sparse and inconclusive. PURPOSE: To assess pain and functional outcomes in patients undergoing operative and nonoperative treatments for rotator cuff tears. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: From March 2011 to February 2015, a multicenter cohort of patients with rotator cuff tears undergoing operative and nonoperative treatments was recruited...
September 13, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31513452/long-term-results-of-the-open-latarjet-procedure-for-recurrent-anterior-shoulder-instability-in-patients-older-than-40-years
#3
Lukas Ernstbrunner, Lara Wartmann, Stefan M Zimmermann, Pascal Schenk, Christian Gerber, Karl Wieser
BACKGROUND: Subgroup analyses of the Latarjet procedure have suggested that age over 40 years is a risk factor for dislocation arthropathy. PURPOSE: To analyze long-term results of the open Latarjet procedure for recurrent anterior shoulder dislocation in patients at least 40 years of age. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: 39 consecutive patients (40 shoulders) with a mean age of 48 years (range, 40-66 years) at surgery were evaluated at a mean follow-up of 11...
September 12, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31513431/multiple-concussions-increase-odds-and-rate-of-lower-extremity-injury-in-national-collegiate-athletic-association-athletes-after-return-to-play
#4
Garrett K Harada, Caitlin M Rugg, Armin Arshi, Jeremy Vail, Sharon L Hame
BACKGROUND: Concussion in collegiate athletics is one of the most prevalent sport-related injuries in the United States, with recent studies suggesting persistent deficits in neuromuscular control after a concussion and an associated increase in risk of lower extremity injury. PURPOSE: To expand on the relationship between concussion and lower extremity injury by examining the effect of multiple concussions (MC) on rate and odds of future lower extremity injury in collegiate athletes after return to play (RTP) compared with matched controls...
September 12, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31513430/association-of-preoperative-gluteal-muscle-fatty-infiltration-with-patient-outcomes-in-women-after-hip-abductor-tendon-repair-augmented-with-lars
#5
Jay R Ebert, Anne Smith, William Breidahl, Michael Fallon, Gregory C Janes
BACKGROUND: Hip abductor tendon repair has demonstrated encouraging outcomes. The influence of fatty infiltration (FI) on outcome has not been explored. PURPOSE: To investigate the association between preoperative hip abductor FI and clinical outcome after hip abductor tendon repair. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: A total of 84 women underwent hip abductor tendon repair. The mean age was 64...
September 12, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31513429/bone-bruise-and-anterior-cruciate-ligament-tears-presence-distribution-pattern-and-associated-lesions-in-the-pediatric-population
#6
Vittorio Bordoni, Giorgio di Laura Frattura, Davide Previtali, Simone Tamborini, Christian Candrian, Marirosa Cristallo Lacalamita, Filippo Del Grande, Giuseppe Filardo
BACKGROUND: Bone bruise characteristics after anterior cruciate ligament (ACL) injury have been correlated with the level of joint derangement in adults. However, the literature lacks information about younger patients, whose higher ligamentous laxity may lead to different lesion patterns. PURPOSE: To investigate the prevalence, size, location, and role of bone bruise associated with ACL rupture in the pediatric population. STUDY DESIGN: Cross-sectional study; Level of evidence, 3...
September 12, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31513428/evaluating-the-accuracy-of-tibial-tunnel-placement-after-anatomic-single-bundle-anterior-cruciate-ligament-reconstruction
#7
Christopher Pedneault, Carl Laverdière, Adam Hart, Mathieu Boily, Mark Burman, Paul A Martineau
BACKGROUND: Anatomic anterior cruciate ligament (ACL) reconstruction improves knee kinematics and joint stability in symptomatic patients who have ACL deficiency. Despite a concerted effort to place the graft within the ACL's native attachment sites, the accuracy of tunnel placement using contemporary techniques is not well established. PURPOSE: The present study uses 3-dimensional magnetic resonance imaging (3D MRI) to prospectively evaluate the accuracy of tibial tunnel placement after anatomic ACL reconstruction...
September 12, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31503508/donor-site-evaluation-after-osteochondral-autograft-transplantation-for-capitellar-osteochondritis-dissecans
#8
Takeshi Matsuura, Yusuke Hashimoto, Takuya Kinoshita, Kazuya Nishino, Yohei Nishida, Junsei Takigami, Hiroshi Katsuda, Nagakazu Shimada
BACKGROUND: Osteochondral autograft transplantation (OAT) for capitellar osteochondritis dissecans (OCD) requires harvesting of tissue from the asymptomatic knee joint. However, donor site morbidity (DSM) in such cases remains unclear. PURPOSE: To evaluate DSM and postoperative radiographic findings in patients undergoing OAT for advanced capitellar OCD. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Eighty-six juvenile athletes underwent OAT for advanced capitellar OCD...
September 10, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31503505/extracorporeal-shockwave-therapy-accelerates-the-healing-of-a-meniscal-tear-in-the-avascular-region-in-a-rat-model
#9
Shogo Hashimoto, Tsuyoshi Ichinose, Takashi Ohsawa, Noriyuki Koibuchi, Hirotaka Chikuda
BACKGROUND: The treatment of meniscal tears in the avascular region remains a clinical challenge. Extracorporeal shockwave therapy (ESWT) is a minimally invasive, safe, and effective therapy for various orthopaedic disorders. However, the therapeutic effect of ESWT on meniscal tears has not been reported. PURPOSE: To evaluate the therapeutic effect of ESWT in the treatment of meniscal tears. STUDY DESIGN: Controlled laboratory study. METHODS: Twelve-week-old male Wistar rats were divided into 3 groups (normal, ESWT-, and ESWT+)...
September 10, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31503501/outcomes-of-revision-hip-arthroscopic-surgery-a-systematic-review-and-meta-analysis
#10
Michaela O'Connor, Gabrielle K Steinl, Ajay S Padaki, Kyle R Duchman, Robert W Westermann, T Sean Lynch
BACKGROUND: While the indications for primary hip arthroscopic surgery in treating femoroacetabular abnormalities continue to be defined, the indications and outcomes for revision hip arthroscopic surgery remain ambiguous. However, revision hip arthroscopic surgery is performed in 5% to 14% of patients after their index procedure. While patient-reported outcomes (PROs) generally improve after revision procedures, the extent of their improvement is not well defined. PURPOSE: To determine the outcomes and efficacy of revision hip arthroscopic surgery in patients who remain symptomatic after their index procedure...
September 10, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31498688/management-of-the-failed-latarjet-procedure-outcomes-of-revision-surgery-with-fresh-distal-tibial-allograft
#11
Matthew T Provencher, Liam A Peebles, Zachary S Aman, Andrew S Bernhardson, Colin P Murphy, Anthony Sanchez, Travis J Dekker, Robert F LaPrade, Giovanni Di Giacomo
BACKGROUND: Patients with recurrent anterior glenohumeral instability after a failed Latarjet procedure remain a challenge to address. Complications related to this procedure include large amounts of bone loss, bone resorption, and issues with retained hardware that necessitate the need for revision surgery. PURPOSE: To determine the outcomes of patients who underwent revision surgery for a recurrent shoulder instability after a failed Latarjet procedure with fresh distal tibial allograft...
September 9, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31498686/association-between-running-shoe-characteristics-and-lower-extremity-injuries-in-united-states-military-academy-cadets
#12
Gary L Helton, Kenneth L Cameron, Rebecca A Zifchock, Erin Miller, Donald L Goss, Jinsup Song, Michael T Neary
BACKGROUND: Running-related overuse injuries are very common among recreational runners, with the reported annual injury rates ranging from 39% to 85%. Relatively few large prospective cohort studies have been conducted to investigate injury risk associated with different running shoe characteristics, and the results of the existing studies are often contradictory. PURPOSE/HYPOTHESIS: The purpose was to investigate the relationship between running shoe characteristics and lower extremity musculoskeletal injury...
September 9, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31498654/prevalence-of-and-risk-factors-for-total-hip-and-knee-replacement-in-retired-national-football-league-athletes
#13
Madeleine A M Davies, Zachary Y Kerr, J D DeFreese, Nigel K Arden, Stephen W Marshall, Kevin M Guskiewicz, Darin A Padua, Brian Pietrosimone
BACKGROUND: Osteoarthritis is a substantial cause of disability. Joint replacement prevalence relates to the burden of severe osteoarthritis, and identifying risk factors for end-stage disease may indicate intervention opportunities. American football has high youth and elite participation, and determining risk factors for severe osteoarthritis may support future morbidity prevention. PURPOSE: To (1) determine the prevalence of hip and knee replacement in retired National Football League (NFL) athletes, (2) examine risk factors for replacement, and (3) identify the association between knee injuries and knee replacement...
September 9, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31498652/relationship-between-glenohumeral-internal-rotation-deficit-and-medial-elbow-torque-in-high-school-baseball-pitchers
#14
D Grace Smith, Alexander J Swantek, Caleb M Gulledge, Vincent A Lizzio, Angel Bermudez, Brian M Schulz, Eric C Makhni
BACKGROUND: Alterations in throwing mechanics have been identified as a risk factor for overuse injuries in baseball players. Glenohumeral internal rotation deficit (GIRD) has been found to adversely affect throwing mechanics, but the effect of GIRD on medial elbow torque is unclear. PURPOSE: To investigate the relationship between GIRD and medial elbow torque in high school-aged baseball pitchers. STUDY DESIGN: Descriptive laboratory study...
September 9, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31490700/the-outside-in-lesion-of-hip-impingement-and-the-inside-out-lesion-of-hip-dysplasia-two-distinct-patterns-of-acetabular-chondral-injury
#15
Matthew J Kraeutler, Jesse A Goodrich, Matthew J Fioravanti, Tigran Garabekyan, Omer Mei-Dan
BACKGROUND: Femoroacetabular impingement (FAI) and acetabular dysplasia lead to acetabular cartilage damage that commonly results in the chondral flaps seen during hip arthroscopy. PURPOSE: To compare the acetabular chondral flap morphology seen during hip arthroscopy ("outside-in" vs "inside-out") with clinical and radiographic parameters underlying FAI and hip dysplasia. STUDY DESIGN: Cohort study; Level of evidence, 3...
September 6, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31486679/patient-specific-3-d-magnetic-resonance-imaging-based-dynamic-simulation-of-hip-impingement-and-range-of-motion-can-replace-3-d-computed-tomography-based-simulation-for-patients-with-femoroacetabular-impingement-implications-for-planning-open-hip-preservation
#16
Till D Lerch, Celia Degonda, Florian Schmaranzer, Inga Todorski, Jennifer Cullmann-Bastian, Guoyan Zheng, Klaus A Siebenrock, Moritz Tannast
BACKGROUND: Femoroacetabular impingement (FAI) is a complex 3-dimensional (3D) hip abnormality that can cause hip pain and osteoarthritis in young and active patients of childbearing age. Imaging is static and based on 2-dimensional radiographs or computed tomography (CT) scans. Recently, CT-based 3D impingement simulation was introduced for patient-specific assessments of hip deformities, whereas magnetic resonance imaging (MRI) offers a radiation-free alternative for surgical planning before hip arthroscopic surgery...
September 5, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31480851/optimal-outcomes-for-acute-avulsion-fracture-of-the-achilles-tendon-treated-with-the-insertional-reattachment-technique-a-case-series-of-31-cases-with-over-2-years-of-follow-up
#17
Yanbin Pi, Yuelin Hu, Chen Jiao, Yingfang Ao, Qinwei Guo
BACKGROUND: Avulsion fracture of the Achilles tendon is a less common but debilitating disorder. There is a paucity of literature on this problem. PURPOSE: To present a retrospective case series assessing the clinical outcomes of avulsion fracture of the Achilles tendon after a reattachment procedure and to identify potential factors predicting postoperative outcomes. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: A consecutive case series of 35 patients with acute insertional rupture of the Achilles tendon who received a reattachment procedure between 2011 and 2017 were reviewed...
September 3, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31469584/a-majority-of-anterior-cruciate-ligament-injuries-can-be-prevented-by-injury-prevention-programs-a-systematic-review-of-randomized-controlled-trials-and-cluster-randomized-controlled-trials-with-meta-analysis
#18
Yu-Lun Huang, Jaehun Jung, Colin M S Mulligan, Jaekeun Oh, Marc F Norcross
BACKGROUND: Anterior cruciate ligament (ACL) injury prevention programs (IPPs) are generally accepted as being valuable for reducing injury risk. However, significant methodological limitations of previous meta-analyses raise questions about the efficacy of these programs and the extent to which meeting current best-practice ACL IPP recommendations influences the protective effect of these programs. PURPOSE: To (1) estimate the protective effect of ACL IPPs while controlling for common methodological limitations of previous meta-analyses and (2) systematically categorize IPP components and factors related to IPP delivery to assess the validity of current best-practice IPP recommendations...
August 30, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31469576/outcomes-more-than-2-years-after-meniscal-repair-for-radial-flap-tears-of-the-posterior-lateral-meniscus-combined-with-anterior-cruciate-ligament-reconstruction
#19
Akira Tsujii, Yasukazu Yonetani, Kazutaka Kinugasa, Tomohiko Matsuo, Kenji Yoneda, Tomoki Ohori, Masayuki Hamada
BACKGROUND: Meniscal function after repair of radial/flap tears of the posterior horn of the lateral meniscus (LM) with anterior cruciate ligament reconstruction (ACLR) has not been comprehensively investigated. PURPOSE: To evaluate not only the clinical and radiographic outcomes of patients with repair of radial/flap tears of the posterior LM with ACLR but also the healing status of the repaired meniscus and changes of chondral status with second-look arthroscopy...
August 30, 2019: American Journal of Sports Medicine
https://read.qxmd.com/read/31468987/exposure-to-american-football-and-neuropsychiatric-health-in-former-national-football-league-players-findings-from-the-football-players-health-study
#20
Andrea L Roberts, Alvaro Pascual-Leone, Frank E Speizer, Ross D Zafonte, Aaron L Baggish, Herman Taylor, Lee M Nadler, Ann Connor, Rachel Grashow, Alexandra M Stillman, Dean A Marengi, Marc G Weisskopf, Theodore K Courtney
BACKGROUND: Former American football players have a higher prevalence of cognitive impairment than that of the US general population. It remains unknown what aspects of playing football are associated with neuropsychiatric outcomes. HYPOTHESIS: It was hypothesized that seasons of professional football, playing position, and experience of concussions were associated with cognition-related quality of life (QOL) and indicators of depression and anxiety. STUDY DESIGN: Descriptive epidemiology study...
August 30, 2019: American Journal of Sports Medicine
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