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Pellegrini-Stiedia lesion

Case contributed by Mohammad Taghi Niknejad
Diagnosis certain

Presentation

Pain along medial aspect of knee for several months.

Patient Data

Age: 30 years
Gender: Male
x-ray

Linear calcification adjacent to the medial femoral condyle, paralleling the femoral cortex.

Case Discussion

Features are consistent with a Pellegrini-Stieda lesion which is a form of myositis ossificans or soft tissue ossification and may occur a few weeks following an avulsion of the origin of the medial collateral ligament.

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