Presentation
Left hip pain
Patient Data
Age: 55 years
Gender: Female
From the case:
Subchondral insufficiency fracture - femoral head
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Marrow edema involving head of left femur with subchondral flattening, irregularity of anterosuperior aspects. Subtle subchondral irregular, linear hypointensity seen parallel to articular surface.
Marrow edema is extending to neck.
Mild synovial effusion seen on left side.
Case Discussion
Findings are suggestive of subchondral insufficiency fracture of the left femoral head. It needs to be differentiated from avascular necrosis, wherein a double line is seen which is convex to the articular surface as opposed to insufficiency fracture which is parallel to the articular surface.