For example, in football or soccer, a player plants his or her leg, slows down quickly, and cuts into a different direction. Depending on the direction of the cut, this sudden stop and twist of the knee can put too much stress on the ACL and cause it to tear (Slowik 2). While it is possible to tear an ACL in a non-contact sport, most ACL that are torn during sports occur while playing a contact sport. “One study showed that contact resulted in 93% of injuries in a ground of 226 patients while non-contact sport resulted in the remaining 7%” (Curran, Kum, Tanyu, Wyatt 1). The other risk factor for ACL tears is gender.…