Presentation
Left knee injury a few weeks ago.
Patient Data
Age: 20 years
Gender: Male
From the case:
Osteochondritis dissecans - lateral femoral trochlea
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Intra-articular body within the suprapatellar recess with cortical irregularity of the femoral trochlea. Small joint effusion.
From the case:
Osteochondritis dissecans - lateral femoral trochlea
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Moderate joint effusion.
Chronic osteochondral defect of the lateral femoral trochlea with the fragment displaced into the medial suprapatellar recess. The osteochondral defect has a sclerotic rim and underlying high signal. Chondrosis of the adjacent cartilage.
No acute meniscoligamentous injury.
Case Discussion
This is an example of stage IV osteochondritis dissecans with a displaced intra-articular fragment (stage IV). The femoral trochlea is a less common site in the knee.
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