Takayuki Kawasaki1, Chihiro Ota2, Shingo Urayama3, Nobukazu Maki4, Masataka Nagayama5, Takefumi Kaketa5, Yuji Takazawa5, Kazuo Kaneko5. 1. Department of Orthopaedic Surgery, Juntendo University Faculty of Medicine, Bunkyo, Tokyo, Japan. Electronic address: k-saki@luck.ocn.ne.jp. 2. Keio University Rugby Football Club, Yokohama, Kanagawa, Japan. 3. Department of Sports Medicine, International Budo University, Katsuura, Chiba, Japan. 4. Mejiro Orthopaedic and Internal Medicine Clinic, Toshima, Tokyo, Japan. 5. Department of Orthopaedic Surgery, Juntendo University Faculty of Medicine, Bunkyo, Tokyo, Japan.
Abstract
BACKGROUND: The incidence of reinjuries due to glenohumeral instability and the major risk factors for primary anterior shoulder dislocation in youth rugby players have been unclear. PURPOSE: The purpose of this study was to investigate the incidence, mechanisms, and intrinsic risk factors of shoulder dislocation in elite high-school rugby union teams during the 2012 season. METHODS: A total of 378 male rugby players from 7 high-school teams were investigated by use of self-administered preseason and postseason questionnaires. RESULTS: The prevalence of a history of shoulder dislocation was 14.8%, and there were 21 events of primary shoulder dislocation of the 74 overall shoulder injuries that were sustained during the season (3.2 events per 1000 player-hours of match exposure). During the season, 54.3% of the shoulders with at least one episode of shoulder dislocation had reinjury. This study also indicated that the persistence of glenohumeral instability might affect the player's self-assessed condition, regardless of the incidence during the current season. By a multivariate logistic regression method, a history of shoulder dislocation on the opposite side before the season was found to be a risk factor for contralateral primary shoulder dislocation (odds ratio, 3.56; 95% confidence interval, 1.27-9.97; P = .02). CONCLUSIONS: High-school rugby players with a history of shoulder dislocation are not playing at full capacity and also have a significant rate of reinjury as well as a high risk of dislocating the other shoulder. These findings may be helpful in deciding on the proper treatment of primary anterior shoulder dislocation in young rugby players.
BACKGROUND: The incidence of reinjuries due to glenohumeral instability and the major risk factors for primary anterior shoulder dislocation in youth rugby players have been unclear. PURPOSE: The purpose of this study was to investigate the incidence, mechanisms, and intrinsic risk factors of shoulder dislocation in elite high-school rugby union teams during the 2012 season. METHODS: A total of 378 male rugby players from 7 high-school teams were investigated by use of self-administered preseason and postseason questionnaires. RESULTS: The prevalence of a history of shoulder dislocation was 14.8%, and there were 21 events of primary shoulder dislocation of the 74 overall shoulder injuries that were sustained during the season (3.2 events per 1000 player-hours of match exposure). During the season, 54.3% of the shoulders with at least one episode of shoulder dislocation had reinjury. This study also indicated that the persistence of glenohumeral instability might affect the player's self-assessed condition, regardless of the incidence during the current season. By a multivariate logistic regression method, a history of shoulder dislocation on the opposite side before the season was found to be a risk factor for contralateral primary shoulder dislocation (odds ratio, 3.56; 95% confidence interval, 1.27-9.97; P = .02). CONCLUSIONS: High-school rugby players with a history of shoulder dislocation are not playing at full capacity and also have a significant rate of reinjury as well as a high risk of dislocating the other shoulder. These findings may be helpful in deciding on the proper treatment of primary anterior shoulder dislocation in young rugby players.
Authors: Ignacio Pasqualini; Luciano Andrés Rossi; Franco Luis De Cicco; Ignacio Tanoira; Ignacio Alonso Hidalgo; Santiago Bongiovanni; Diego Hernán Giunta; Maximiliano Ranalletta Journal: Shoulder Elbow Date: 2021-02-17
Authors: Bradley M Kruckeberg; Devin P Leland; Christopher D Bernard; Aaron J Krych; Diane L Dahm; Joaquin Sanchez-Sotelo; Christopher L Camp Journal: Orthop J Sports Med Date: 2020-11-11
Authors: Brian C Lau; Tyler R Johnston; Bonnie P Gregory; Lorena Bejarano Pineda; Mark Wu; Amanda N Fletcher; Jessica H Hu; Leila Ledbetter; Jonathan C Riboh Journal: Orthop J Sports Med Date: 2020-05-29
Authors: Devin P Leland; Chad W Parkes; Christopher D Bernard; Aaron J Krych; Diane L Dahm; John M Tokish; Christopher L Camp Journal: Arthrosc Sports Med Rehabil Date: 2020-12-15
Authors: Travis L Frantz; Joshua S Everhart; Gregory L Cvetanovich; Andrew Neviaser; Grant L Jones; Carolyn M Hettrich; Brian R Wolf; Julie Bishop; Bruce Miller; Robert H Brophy; C Benjamin Ma; Charlie L Cox; Keith M Baumgarten; Brian T Feeley; Alan L Zhang; Eric C McCarty; John E Kuhn Journal: Orthop J Sports Med Date: 2020-02-27