Presentation
6 months of knee pain, no trauma
Patient Data
Age: 40 years
Gender: Male
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/16205/annotated_viewer_json?iframe=true\u0026lang=us"}
Geographical margined, alternating signal intensity subcortical lesion of the medial femoral condyle.
From the case:
Spontaneous osteonecrosis of the knee
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/77549/annotated_viewer_json?iframe=true\u0026lang=us"}
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)