“…Non-contact ACL injuries appear to occur most commonly during landing (Hume and Steele 1997;Otago and Neal 1997), rapid change of direction (Bartold 1997) and deceleration (Miller, Cooper, and Warner 1995). Furthermore, most non-contact ACL injuries appear to occur close to foot strike with the knee close to full extension and in a valgus position (Boden, Dean, Faegin, et al 2000;Olsen, Mykelbust, Engebretsen, et al 2004). Not surprisingly, the incidence of ACL injury is relatively high in sports involving a high frequency of landing, decelerating and rapid changes of direction such as basketball, netball, handball and volleyball (Arendt and Dick, 1995;Griffin, Angel, Albohm, et al 2000).…”