PT - JOURNAL ARTICLE AU - Ralph Akoto AU - Christophe Lambert AU - Maurice Balke AU - Bertil Bouillon AU - Karl-Heinz Frosch AU - Jürgen Höher TI - Epidemiology of injuries in judo: a cross-sectional survey of severe injuries based on time loss and reduction in sporting level AID - 10.1136/bjsports-2016-096849 DP - 2018 Sep 01 TA - British Journal of Sports Medicine PG - 1109--1115 VI - 52 IP - 17 4099 - http://bjsm.bmj.com/content/52/17/1109.short 4100 - http://bjsm.bmj.com/content/52/17/1109.full SO - Br J Sports Med2018 Sep 01; 52 AB - Background Sport injury severity can be detected by duration of time loss and reduction of sporting performance.Aim To detect injury type-specific time loss duration and sporting performance reduction in judo.Methods An online survey of active and former judo athletes was conducted (exclusion criterion: incomplete questionnaire). Only injuries causing more than 3 weeks’ time loss were recorded. Athletes classified themselves into performance classes. Injury type-specific frequencies were recorded according to gender, age and performance level. Injury severity was assessed by time loss duration and performance reduction.Results The study included 4659 athletes (65% male, 38% competitive sports). The most commonly injured body regions were the upper extremity (41%) and the lower extremity (39%). Anterior cruciate ligament (ACL) ruptures were the most severe injury type (time loss: 4% of cases 3–6 weeks, 6% 6–12 weeks, 26% 3–6 months, 32% 6–9 months, 18% 9–12 months, 14%>12 months; performance reduction: 32% same level, 39% slightly reduced, 24% strongly reduced, 5% stopped judo). The second most severe type of injury was a vertebral disc prolapse (time loss: 26% 3–6 weeks, 31% 6–12 weeks, 20% 3–6 months, 7% 6–9 months, 3% 9–12 months 13%>12 months; reduction of sporting performance: 39% same level, 34% slightly reduced, 20% strongly reduced, 8% stopped judo).Conclusion Across genders and performance levels, ACL ruptures and vertebral disc prolapses were the most severe injuries with respect to time loss and sporting performance reduction.