Presentation
Chronic right hip pain
Patient Data
Age: 30 years
Gender: Male
From the case:
Subspine impingement of the hip
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Subchondral cystic changes of the anterior superior femoral head aspect with prominent tendon-like low T1/T2 signal intensity extending from the right anterior inferior iliac spine at the origin of the direct (straight) head of rectus femoris.
From the case:
Subspine impingement of the hip
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X-ray shows a large bony spur extending inferior from the right anterior inferior iliac spine. Contact with the greater tuberosity during the frog-leg view.
Case Discussion
Subspine impingement is a rare type of hip impingement. In this case, it appears secondary to heterotopic ossification of the origin of the rectus femoris direct (straight) head, presumably secondary to prior injury.
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