Presentation
Anterior and medial knee pain. History of arthroscopy, no trauma.
Patient Data
Age: 30 years
Gender: Male
From the case:
Medial plica
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Retropatellar cartilage tear covering less than half of cartilage thickness. At this level there is a medial plica extending from the medial side of the joint into the patellofemoral compartment. No cartilage defects elsewhere.
Intact cruciate, collateral and other ligamentous structures. No bone marrow edema. Normal menisci.
Subtle focus of high signal intensity on T2 fat sat images superolaterally in Hoffa's fat pad with no evident patellar subluxation.
From the case:
Medial plica
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green arrow: subtle focal hyperintense signal suggestive of edema
yellow arrow: medial plica / red arrow: retropatellar cartilage tear
Case Discussion
Plica medialis.
Superolateral impingement.
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