Osteochondritis dissecans of the knee

Case contributed by Dr Ahmed Abd Rabou

Presentation

Knee pain and limitation of movement following volleyball game. The patient is athelete.

Patient Data

Age: 20 years old
Gender: Female
Modality: MRI

A bony defect is seen at the lateral aspect of the medial femoral condyle with underlying bone marrow edema of the medial femoral condyle exhibiting bright STIR signal. A small bony fragment is seen anterior to the ACL.

Diagnosis: Osteochondritis dessicans of the knee (Unstable type)

Modality: Annotated image

Bone defect at lateral aspect of medial femoral condyle

A bone fragment anterior to the ACL

Case Discussion

The lesion is stable when the bony fragment still in place but when the fragment detached and displaced from the mother bone secondary osteoarthritis may develop and hence unstable lesion requires surgical intervention 
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Case Information

rID: 25909
Case created: 15th Nov 2013
Last edited: 11th Dec 2015
Tags: knee, trauma
Inclusion in quiz mode: Included

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