Presentation
6 months of knee pain, no trauma
Patient Data
Age: 40 years
Gender: Male




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Geographical margined, alternating signal intensity subcortical lesion of the medial femoral condyle.
From the case:
Spontaneous osteonecrosis of the knee
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Scan performed 6 months prior shows no abnormality in medial femoral condyle.
Case Discussion
Typical location and demographics for SONK (spontaneous osteonecrosis of the knee)