Chronic osteochondral fracture - lateral femoral trochlea

Case contributed by Dr Ammar Haouimi


Chronic pain of the right knee. History of motorcycle accident 2 years ago.

Patient Data

Age: 35 years
Gender: Male

There is an osteochondral defect of the lateral femoral trochlea with subchondral cystic changes and no bone marrow edema. The detached osteochondral fragment is displaced above the patella, in the suprapatellar bursa. No ligament or meniscal injuries were seen. Subtle joint effusion.

Case Discussion

MRI appearance of an old osteochondral fracture of the lateral femoral trochlea.

The presence of subchondral cystic changes as well as the absence of bone marrow edema and significant joint effusion are suggestive of a non-acute injury.

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Case information

rID: 66194
Published: 13th Feb 2019
Last edited: 19th Feb 2019
Inclusion in quiz mode: Included
Institution: Aurès Medical Imaging Center - Batna Algeria

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