Rotational Laxity Control by the Anterolateral Ligament and the Lateral Meniscus Is Dependent on Knee Flexion Angle: A Cadaveric Biomechanical Study.

CONCLUSIONS: The ALL and LMPR both play a role in aiding the ACL in controlling internal rotation laxity in vitro; however, these effects seem to be dependent on flexion angle. The ALL has a greater role in controlling internal rotation at flexion angles > 30(o). The LMPR appears to have more of an effect on controlling rotation closer to extension. CLINICAL RELEVANCE: Injury to the ALL and/or LMPR may contribute to high-grade anterolateral laxity after ACL injury. The LMPR and the ALL, along with the iliotibial tract, appear to act in concert as secondary stabilizers of anterolateral rotation and could be considered as the "anterolateral corner" of the knee. PMID: 28536855 [PubMed - as supplied by publisher]
Source: Clinical Orthopaedics and Related Research - Category: Orthopaedics Authors: Tags: Clin Orthop Relat Res Source Type: research