Crescent sign of femoral head avascular necrosis

Case contributed by Mohammadtaghi Niknejad


Left hip pain.

Patient Data

Age: 14 years
Gender: Male

Subchondral lucency seen at proximal left femoral head.

Case Discussion

Features are consistent with the crescent sign seen on conventional radiographs and refers to a subchondral lucency seen most frequencly anterolateral aspect of the proximal femoral head indicated avascular necrosis of femoral head.

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