Anterior Cruciate Ligament Injury Mechanisms and the Kinetic Chain Linkage: The Effect of Proximal Joint Stiffness on Distal Knee Control During Bilateral Landings

摘要

Neuromuscular deficits of the trunk and hip musculature may contribute to noncontact anterior cruciate ligament (ACL) injury mechanisms such as dynamic knee valgus. However, comprehensive examination and characterization of such deficits are incomplete in the literature. Dynamic knee valgus is characterized by hip adduction and knee abduction when the knee has collapsed medially and joint structures experience excessively high loads, though multiplanar kinematics at the lower extremity joints can also contribute to dynamic valgus. Recent evidence implicating aberrant trunk and hip kinematics in dynamic valgus behavior provides a rationale for the mechanism being a proximal-to-distal process.