ACL biomechanical risk factors on single-leg drop-jump: a cohort study comparing football players with and without history of lower limb injury

Background. The maximum knee valgus angle (KVA) and minimum knee flexion angle (KFA) have been identified as risk factors for non-contact anterior cruciate ligament (ACL) injury. The present study investigated whether a recent history of lower limb injury in professional male football players can affect KVA and KFA during a single-leg vertical drop-jump (SLVDJ). Methods. … Continued