Figure 1: Landing position (a) single-leg landing in slight flexion of the hip and knee causing valgus at knee and stress to the anterior cruciate ligament (b) on both legs in slight flexion, internal rotation, and adduction of hip at hip and knee in flexion, internal rotation, and abduction leading to the anterior cruciate ligament stress. (c and d) Correct posture of landing with flexion, external rotation, and abduction of hip and knee in flexion, shoulder-width apart, and facing forward