Presentation
Pain in left hip
Patient Data
Age: 40 years
Gender: Male
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.
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.