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Knee joint sports injuries occur among young people, are very common and harm the physical and mental health of young people. Must cause the main importance of sports management departments, actively reducing exercise prevention of knee joint injury and intervention measures of research and exploration, to avoid juvenile sports injury of knee occurred or knee injuries to a minimum level, enhance physical and mental health of teenagers.doi:10.12783/dtetr/mcee2017/15758 fatcat:ealry6zrn5erbk3jtm3nt3cz3i