title: Intrinsic risk factors for acute ankle injuries among male soccer players: a prospective cohort study.
abstract: This prospective cohort study was conducted to identify risk factors for acute ankle injuries among male soccer players. A total of 508 players representing 31 amateur teams were tested during the 2004 pre-season through a questionnaire on previous injury and function score (foot and ankle outcome score; FAOS), functional tests (balance tests on the floor and a balance mat) and a clinical examination of the ankle. Generalized estimating equations were used in univariate analyses to identify candidate risk factors, and factors with a P-value <0.10 were then examined in a multivariate model. During the season, 56 acute ankle injuries, affecting 46 legs (43 players), were registered. Univariate analyses identified a history of previous acute ankle injuries [odds ratio (OR) per previous injury: 1.25, 95% confidence interval (CI) 1.09-1.43] and the FAOS sub-score "Pain" (OR for a 10-point difference in score: 0.81, 95% CI 0.62-1.04) as candidate risk factors. In a multivariate analysis, only the number of previous acute ankle injuries proved to be a significant (adjusted OR per previous injury: 1.23; 95% CI 1.06-1.41, P=0.005) predictor of new injuries. Function scores, functional tests and clinical examination could not independently identify players at an increased risk in this study.
authors: Oslo Sports Trauma Research Center, Norwegian School of Sports Sciences, Oslo, Norway. anders.engebretsen@nih.no
authors: A H
authors: AH
authors: Engebretsen
authors: G
authors: G
authors: Myklebust
authors: I
authors: I
authors: Holme
authors: L
authors: L
authors: Engebretsen
authors: R
authors: R
authors: Bahr
mesh_terms: D016512:Ankle Injuries / Q000453:epidemiology* / Q000503:physiopathology / Q000517:prevention & control; D015331:Cohort Studies; D006801:Humans; D008297:Male; D015999:Multivariate Analysis; D009664:Norway; D011446:Prospective Studies; D016032:Randomized Controlled Trials as Topic; D012307:Risk Factors; D012916:Soccer; D011795:Surveys and Questionnaires