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Elbow Ligament

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https://www.readbyqxmd.com/read/29775388/epidemiology-of-elbow-ulnar-collateral-ligament-injuries-among-baseball-players-national-collegiate-athletic-association-injury-surveillance-program-2009-2010-through-2013-2014
#1
Steven F DeFroda, Avi D Goodman, Joseph A Gil, Brett D Owens
BACKGROUND: Injuries to the ulnar collateral ligament (UCL) of the elbow are of major concern in baseball; however, the epidemiology of these injuries among National Collegiate Athletic Association (NCAA) athletes is poorly described. PURPOSE: To determine the incidence of UCL injuries in NCAA baseball and investigate the risk factors involved. STUDY DESIGN: Descriptive epidemiology study. METHODS: All UCL injuries for academic years 2009-2010 through 2013-2014 were extracted from the NCAA Injury Surveillance Program database...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29748121/the-biomechanical-evaluation-of-a-novel-3-strand-docking-technique-for-ulnar-collateral-ligament-reconstruction-in-the-elbow
#2
Phillip N Williams, Michelle H McGarry, Hansel Ihn, Brian M Schulz, Orr Limpisvasti, Neal S ElAttrache, Thay Q Lee
BACKGROUND AND HYPOTHESIS: The original 2-strand docking technique for elbow ulnar collateral ligament reconstruction has recently been modified to use a 3-strand graft. To date, no biomechanical study has compared the 2 techniques. We hypothesized that the 3-strand docking technique would restore valgus laxity to its native state, with comparable load-to-failure characteristics to the 2-strand docking technique. MATERIALS AND METHODS: Sixteen fresh cadaveric elbows were matched to the corresponding contralateral side from the same individual to create 8 matched pairs and were then randomized to undergo ulnar collateral ligament reconstruction using either the 2- or 3-strand technique...
May 7, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29746146/predictors-of-elbow-torque-among-youth-and-adolescent-baseball-pitchers
#3
Kelechi R Okoroha, Vincent A Lizzio, Fabien Meta, Christopher S Ahmad, Vasilios Moutzouros, Eric C Makhni
BACKGROUND: There has been an increasing incidence of overuse elbow injuries among youth and adolescent pitchers. Pitch type has been implicated as a risk factor for excess torque at the medial elbow; however, this has not been definitively demonstrated. PURPOSE: To assess predictors of torque across the medial elbow in youth and adolescent pitchers with a mobile sensor. In addition, the authors aimed to determine the differences in elbow torque produced according to pitch type (fastball, curveball, changeup) and pitcher demographics...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29734945/subtle-elbow-instability-associated-with-lateral-epicondylitis
#4
Sang Ho Kwak, Seung-Jun Lee, Hee Seok Jeong, Min Uk Do, Kuen Tak Suh
BACKGROUND: In lateral epicondylitis, even in the absence of apparent instability, subtle instability can be found under anesthesia. We wanted to ascertain the following: (1) how many elbows surgically treated with lateral epicondylitis showed subtle instability during examination under anesthesia (EUA), (2) how effective magnetic resonance imaging (MRI) was in predicting subtle instability, and (3) if any difference existed in preoperative clinical data between elbows with and without subtle instability during EUA...
May 7, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29721450/multibody-modelling-of-ligamentous-and-bony-stabilizers-in-the-human-elbow
#5
REVIEW
Mara Terzini, Elisabetta Maria Zanetti, Alberto Luigi Audenino, Giovanni Putame, Laura Gastaldi, Stefano Pastorelli, Elisa Panero, Arman Sard, Cristina Bignardi
The elbow ligamentous and bony structures play essential roles in the joint stability. Nevertheless, the contribution of different structures to joint stability is not yet clear and a comprehensive experimental investigation into the ligament and osseous constraints changes in relation to joint motions would be uphill and somehow unattainable, due to the impossibility of obtaining all the possible configurations on the same specimen. Therefore, a predictive tool of the joint behavior after the loss of retentive structures would be helpful in designing reconstructive surgeries and in pre-operative planning...
October 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29713746/the-treatment-of-chronic-radial-head-dislocation-in-monteggia-fracture-without-annular-ligament-reconstruction
#6
Hsuan-Yu Chen, Kuan-Wen Wu, Zheng-Ren Dong, Shier-Chieg Huang, Ken N Kuo, Ting-Ming Wang
INTRODUCTION: The treatment of neglected radial head dislocation after missed Monteggia fracture dislocation in children is a controversial issue. The purpose of this study is to report our clinical experience in the treatment of the condition without annular ligament reconstruction. METHOD: This is a retrospective review of 20 patients between 2008 and 2014. Procedures included open reduction of the radial head and ulnar lengthening angulation osteotomy. In cases of unstable radial head reduction, a trans-capitellar K wire was applied...
May 1, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29712541/refractory-ulnar-nerve-symptoms-in-an-adolescent-pitcher-with-medial-apophysitis
#7
Aaron R Hellem, Elena J Jelsing, Wendy J Hurd
A 16-year-old high school baseball pitcher with a 3-week history of acute-onset pain in his medial elbow during throwing presented to physical therapy. Following examination, physical therapy was initiated and the patient was referred for imaging, with suspicion of ulnar collateral ligament (UCL) injury. Radiographs were noncontributory. Ultrasound imaging, however, was performed by a physiatrist and was suggestive of a partial-thickness tear of the UCL and ulnar nerve enlargement. The physiatrist ordered magnetic resonance imaging, which confirmed a medial apophyseal stress reaction, a mild UCL sprain, and reactive ulnar nerve edema...
May 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29709413/the-radiocapitellar-synovial-fold-a-lateral-anatomic-landmark-for-sizing-radial-head-arthroplasty
#8
Alexander J Lampley, Jacob W Brubacher, Travis J Dekker, Marc J Richard, Grant E Garrigues
BACKGROUND: Successful radial head arthroplasty relies on reproduction of anatomy. We hypothesized that the radiocapitellar synovial fold could serve as a reference point in radial head prosthesis sizing. Our study aimed to define the relationship between the synovial fold and the radial head in elbows with and without lateral ulnar collateral ligament (LUCL) injury. MATERIALS AND METHODS: We performed magnetic resonance imaging evaluation of 34 elbows to determine the normal relationship between the radiocapitellar synovial fold and the radial head...
April 27, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29687011/incidence-of-elbow-ulnar-collateral-ligament-surgery-in-collegiate-baseball-players
#9
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/29686971/snapping-elbow-a-guide-to-diagnosis-and-treatment
#10
Jonathan Jetsmark Bjerre, Finn Elkjær Johannsen, Martin Rathcke, Michael Rindom Krogsgaard
AIM: To develop practical guidelines for diagnosis and treatment of the painful snapping elbow syndrome (SE). METHODS: Clinical studies were searched in the databases PubMed and Scopus for the phrases "SE", "snapping triceps", "snapping ulnar nerve" and "snapping annular ligament". A total of 36 relevant studies were identified. From these we extracted information about number of patients, diagnostic methods, patho-anatomical findings, treatments and outcomes...
April 18, 2018: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29685388/the-contribution-of-the-posterolateral-capsule-to-elbow-joint-stability-a-cadaveric-biomechanical-investigation
#11
Dafydd S Edwards, Mohammed S Arshad, Toni Luokkala, Angela E Kedgley, Adam C Watts
BACKGROUND: Elbow posterolateral rotatory instability occurs after an injury to the lateral collateral ligament complex (LCLC) in isolation or in association with an osteochondral fracture of the posterolateral margin of the capitellum (Osborne-Cotterill lesion [OCL]). The contribution to elbow stability of the posterolateral capsule, attached to this lesion, is unknown. This study quantified the displacement of the radial head on simulated posterior draw with sectioning of the posterior capsule (a simulated OCL) or LCLC...
April 20, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29683338/ulnar-nerve-complications-after-ulnar-collateral-ligament-reconstruction-of-the-elbow-a-systematic-review
#12
Jason B Clain, Mark A Vitale, Christopher S Ahmad, David E Ruchelsman
BACKGROUND: While ulnar collateral ligament reconstruction (UCLR) of the elbow is an increasingly commonly performed procedure with excellent results reported in the published literature, less attention has been paid to specifically on the characterization of postoperative ulnar nerve complications, and it is unclear what operative strategies may influence the likelihood of these complications. PURPOSE: The purpose of this study is to examine the prevalence and type of ulnar nerve complications after UCLR of the elbow based on the entirety of previously published outcomes in the English literature...
April 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29679723/comparison-of-hook-plate-with-versus-without-double-tunnel-coracoclavicular-ligament-reconstruction-for-repair-of-acute-acromioclavicular-joint-dislocations-a-prospective-randomized-controlled-clinical-trial
#13
Jian Yin, Zhaoyang Yin, Ge Gong, Chao Zhu, Chao Sun, Xinhui Liu
PURPOSE: This study was designed to compare the surgical outcomes of a hook plate with double-tunnel coracoclavicular (CC) ligament reconstruction by conjoined tendon transfer versus single hook plate surgery for the repair of acute type of Rockwood type III and V acromioclavicular (AC) joint dislocations. METHODS: The study cohort included 62 patients with acute (within 6 weeks after trauma) Rockwood type III and V AC joint dislocations who underwent surgery from February 2012 to September 2015...
April 18, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29678397/varus-posteromedial-rotatory-instability-a-biomechanical-analysis-of-posterior-bundle-of-the-medial-ulnar-collateral-ligament-reconstruction
#14
Matthew J Gluck, Christina M Beck, Elan J Golan, Philip Nasser, Dave R Shukla, Michael R Hausman
BACKGROUND: Recently, there has been growing interest in the involvement of the posterior bundle of the medial ulnar collateral ligament (pMUCL) in varus posteromedial rotatory instability (PMRI). Varus PMRI has been observed clinically, but the degree of involvement of the pMUCL remains unclear. This study assessed the degree to which the pMUCL is involved in stabilizing the elbow and the feasibility of a pMUCL reconstruction to restore stability. METHODS: Movements simulating PMRI were performed in 8 cadaveric elbows...
April 17, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29677139/musculoskeletal-model-development-of-the-elbow-joint-with-an-experimental-evaluation
#15
Munsur Rahman, Mohsen Sharifi Renani, Akin Cil, Antonis P Stylianou
A dynamic musculoskeletal model of the elbow joint in which muscle, ligament, and articular surface contact forces are predicted concurrently would be an ideal tool for patient-specific preoperative planning, computer-aided surgery, and rehabilitation. Existing musculoskeletal elbow joint models have limited clinical applicability because of idealizing the elbow as a mechanical hinge joint or ignoring important soft tissue (e.g., cartilage) contributions. The purpose of this study was to develop a subject-specific anatomically correct musculoskeletal elbow joint model and evaluate it based on experimental kinematics and muscle electromyography measurements...
April 20, 2018: Bioengineering
https://www.readbyqxmd.com/read/29672435/outcomes-in-early-versus-late-presentation-of-focal-fibrocartilaginous-dysplasia-affecting-the-upper-extremity-a-review-of-4-cases
#16
Grigory Gershkovich, David Kahan, Scott Kozin, Daniel Zlotolow
BACKGROUND: Focal fibrocartilaginous dysplasia (FFCD) is a rare disorder of the upper and lower extremities. In the distal ulna, a ligamentous tether emerging from the metaphysis crosses the physis and restricts growth, leading to deformity. Lesion excision before radiocapitellar subluxation has been shown to restore growth and allow remodeling. We review the outcomes of 4 patients with FFCD of the distal ulna after the occurrence of radiocapitellar incongruity. METHODS: This retrospective review examined 4 patients diagnosed with FFCD of the distal ulna from 2007 to 2015...
April 18, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29629813/summative-report-on-time-out-of-play-for-major-and-minor-league-baseball-an-analysis-of-49-955-injuries-from-2011-through-2016
#17
Christopher L Camp, Joshua S Dines, Jelle P van der List, Stan Conte, Justin Conway, David W Altchek, Struan H Coleman, Andrew D Pearle
BACKGROUND: Recent epidemiologic reports have demonstrated rising injury rates in Major League Baseball (MLB) and Minor League Baseball (MiLB). Although several studies have recently been published on specific injuries, the majority of injuries have not yet been formally studied. PURPOSE: The purpose of this study is to (1) generate a summative analysis of all injuries that occur in MLB and MiLB, (2) identify the 50 most common injuries, and (3) generate focused reports and fact sheets on the characteristics of each of those diagnoses...
April 1, 2018: American 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/29613925/determination-of-elbow-laxity-in-a-sequential-soft-tissue-injury-model-a-cadaveric-study
#19
Marc Schnetzke, Moritz Bergmann, Kilian Wegmann, Lars-Peter Müller, Stephan Grechenig, Paul-Alfred Grützner, Thorsten Guehring
BACKGROUND: The objective of our study was to analyze, under fluoroscopy, joint angulation of uninjured elbows and elbows with distinct induced collateral ligament injury. METHODS: Twelve elbow specimens were tested for varus and valgus joint angulation using 4 different examination methods (application of both varus and valgus stress by each of 2 examiners [Examiner 1 and Examiner 2] and application of 1 and 2 Nm of torque using a calibrated electric force scale) in 4 elbow positions (in full extension with 90° of supination and 90° of pronation, and in 30° of flexion with 90° of supination and 90° of pronation)...
April 4, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29601208/performance-and-return-to-sport-after-tommy-john-surgery-among-major-league-baseball-position-players
#20
Robert A Jack, Matthew B Burn, Kyle R Sochacki, Patrick C McCulloch, David M Lintner, Joshua D Harris
BACKGROUND: The anterior bundle of the medial ulnar collateral ligament (UCL) is the primary restraint to valgus stress at the elbow and is often injured among overhead throwing athletes. Despite prevention strategies, injuries to the elbow UCL are on the rise. PURPOSE: To determine (1) the return-to-sport (RTS) rate of Major League Baseball (MLB) position players after elbow medial UCL reconstruction, (2) postoperative career length and games per season, (3) pre- and postoperative performance, (4) postoperative performance versus matched control players, and (5) whether position players changed positions after UCL reconstruction...
March 1, 2018: American Journal of Sports Medicine
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