Strain in the Anteromedial and Posterolateral Bundles of the ACL Over the Full Range of Flexion

摘要: This paper details experiments to characterize the reciprocating function of the two main anatomical bundles of the anterior cruciate ligament (ACL). This characterization is crucial to gaining a understanding of injury mechanisms so that improved injury prevention methodologies may be developed. Additionally this information may be useful for designing better surgical repair and replacement procedures.Strain gages mounted on the anteromedial and posterolateral bundles (AMB and PLB, respectively) were used to record strain in the ACL as the knee was mobilized over the range of flexion from-8 (hyperextension) to 125. The results of these experiments demonstrate that the strain in the PLB is significantly different from that of the AMB over the range of flexion angles examined. Furthermore, reciprocating behavior is exhibited by the two bundles.