Posteromedial Corner Injuries of the Knee: Imaging Findings

Stefano Fusco; Domenico Albano; Salvatore Gitto; Francesca Serpi; Carmelo Messina; Luca Maria Sconfienza

doi:10.1055/s-0044-1779718

Seminars in Musculoskeletal Radiology, Table of Contents

Semin Musculoskelet Radiol 2024; 28(03): 318-326
DOI: 10.1055/s-0044-1779718

Review Article

Posteromedial Corner Injuries of the Knee: Imaging Findings

Authors

Stefano Fusco

¹Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy
Domenico Albano

²Department of Biomedical, Surgical and Dental Sciences, Università Degli Studi di Milano, Milan, Italy

³IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
Salvatore Gitto

¹Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy

³IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
Francesca Serpi

¹Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy
Carmelo Messina

¹Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy

³IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
Luca Maria Sconfienza

¹Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy

³IRCCS Istituto Ortopedico Galeazzi, Milan, Italy

Abstract

The posteromedial corner (PMC) of the knee is an anatomical region formed by ligamentous structures (medial collateral ligament, posterior oblique ligament, oblique popliteal ligament), the semimembranosus tendon and its expansions, the posteromedial joint capsule, and the posterior horn of the medial meniscus. Injuries to the structures of the PMC frequently occur in acute knee trauma in association with other ligamentous or meniscal tears. The correct assessment of PMC injuries is crucial because the deficiency of these supporting structures can lead to anteromedial rotation instability or the failure of cruciate ligaments grafts. This article reviews the anatomy and biomechanics of the PMC to aid radiologists in identifying injuries potentially involving PMC components.

Keywords

posteromedial corner - knee magnetic resonance imaging - multiligamentous knee injury - anteromedial rotation instability

Full Text

References

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