From †Department of Rehabilitation Services, Yale-New Haven Hospital, New Haven,

Female athletes are at significantly greater risk of anterior cruciate ligament (ACL) injury than male athletes in the same high-risk sports.29 The mechanism of ACL injury is likely a combination of factors: valgus positioning of the lower extremity; relative extension with unbalanced weight distribution; and the plantar surface of the foot being fixed in position, away from the center of mass of th