Posteromedial corner injury of the knee

Case contributed by Dr Henry Knipe

Presentation

Twisting injury to knee. Tender medially.

Patient Data

Age: 50 years
Gender: Male

There is bone marrow edema in the posteromedial tibial plateau in a subchondral location with a T1 undisplaced hypointense fracture line present. Mild hyperintensity within the distal semimembranosus tendon, however, this appears intact. There is hyperintensity on the deep surface of the oblique popliteal ligament, however, the ligament appears intact. There is edema along the expected location of the posterior oblique ligament.

Inner margin blunting of the body and posterior horn medial meniscus. Lateral meniscus is intact. Collateral and cruciate ligaments are intact. Posterolateral corner structures appear uninjured

Case Discussion

Posteromedial corner injuries are uncommon. They are often associated with anterior cruciate ligament injuries, although this case is isolated to the posteromedial corner. 

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Case information

rID: 60919
Published: 8th Jun 2018
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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