Key result
Female sex was associated with a higher incidence of ACL injuries among Japanese junior high and high school athletes compared to males.
Cross-Sectional (n=30,458)
Female high school athletes, particularly in basketball and judo, have a significantly higher incidence of ACL injuries compared to males, highlighting the need for targeted prevention programs.
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May support sex-specific ACL prevention in Japanese youth athletes; leaves open causality and intervention efficacy.
We investigated the incidence of anterior cruciate ligament (ACL) injuries among athletes in junior high school and high school by retrospectively reviewing Japan Sports Council notification data registered over a period of 10 years. The total number of ACL injuries during the 10-year period was 30,458, with an incidence of 0.81 per 1000 athlete-years. Among those with ACL injuries, the ratio of girls to boys was 2.8, and incidence of injury was significantly greater among girls than boys (1.36 as against 0.48). Athletes in the 11th grade demonstrated the highest incidence of ACL injuries. We also found that the greatest incidence of ACL injuries was among female high school basketball players; the second highest being among female high school Judo athletes. For sports with a greater number of ACL injuries and a higher injury rate, it is necessary to obtain more detailed data and analysis to determine an effective prevention programme.
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Takahashi et al. (2017) conducted a cross-sectional in Anterior cruciate ligament (ACL) injury (n=30,458). Female sex vs. Male sex was evaluated on Incidence of ACL injuries per 1000 athlete-years. Female sex was associated with a higher incidence of ACL injuries among Japanese junior high and high school athletes compared to males.
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