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Anatomy and Biomechanics of the Posterolateral and Posteromedial Corners of the Knee and Their Surgical Implications

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Posterior Cruciate Ligament Injuries

Abstract

Injuries to the posterolateral and posteromedial corners of the knee are common and represent a significant diagnostic and treatment challenge. A thorough understanding of posterolateral and posteromedial knee anatomy and biomechanics is paramount for accurate diagnosis and treatment of patients with medial and lateral knee injuries. In the posterolateral corner (PLC) of the knee, the primary static stabilizers include the fibular (lateral) collateral ligament (FCL), popliteus tendon (PLT), and popliteofibular ligament (PFL). Together, these structures function to resist varus gapping and angulation, external rotation, internal rotation, and anterior translation. In the posteromedial knee, the primary structures include the superficial medial collateral ligament (sMCL), deep medial collateral ligament (dMCL), and posterior oblique ligament (POL). These structures function to resist valgus gapping, internal rotation, and external rotation. The purpose of this chapter is to highlight recent advances in the understanding of posterolateral and posteromedial corner anatomy and biomechanics and their surgical implications.

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James, E., LaPrade, C., Johannsen, A., LaPrade, R. (2015). Anatomy and Biomechanics of the Posterolateral and Posteromedial Corners of the Knee and Their Surgical Implications. In: Fanelli, MD, G. (eds) Posterior Cruciate Ligament Injuries. Springer, Cham. https://doi.org/10.1007/978-3-319-12072-0_3

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  • DOI: https://doi.org/10.1007/978-3-319-12072-0_3

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