Season 4 Case 29

History: 28yo with knee pain

Season 4 Case 29

Case 29

History: 28yo with knee pain

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Answer:

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Case 29 Answer

Too easy?

You can see a large loose bony fragment in the lateral aspect of the medial femoral condyle. This is a classic location for a loose osteochondral body, better known as osteochondritis dissecans.

This one certainly looks free-floating, but MRI is a modality of choice.