Eric W. Schweller, Peter J. Ward. Posterolateral Corner Knee Injuries: Review of Anatomy and Clinical Evaluation. J Am Osteopath Assoc 2015;115(12):725–731. doi: 10.7556/jaoa.2015.148.
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The structures in the posterolateral corner of the knee, which stabilize the joint, are often involved in injuries to the posterior cruciate ligament. Familiar structures include the anterior cruciate ligament, posterior cruciate ligament, tibial collateral ligament, and menisci. Less familiar are the structures of the posterolateral corner, the most important of which are the fibular collateral ligament, popliteus tendon, and popliteofibular ligament, which resist varus angulation, external rotation, or posterior translation of the tibia. Injury to the posterolateral corner can be assessed with the posterolateral drawer, dial, reverse pivot shift, external rotation recurvatum, and varus stress tests. The purpose of this review is to highlight the posterolateral corner of the knee and injuries to its structures so that physicians can more accurately diagnose these injuries and provide appropriate treatment. Management focuses on restoring the fibular collateral ligament, popliteofibular ligament, and, in certain cases, the popliteus tendon.
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