Ischial tuberosity avulsion with heterotopic bone formation

Case contributed by Ian Bickle
Diagnosis almost certain

Presentation

Pain in right groin on mobilizing. Complicated medical history. X-ray to rule out OA.

Patient Data

Age: 50 years
Gender: Male

There is a 7 cm well-defined bony expansion of the right ischium. The cortex is intact. No fracture.

Old avulsion fracture of the right ischial tuberosity which has united with new bone/heterotopic bone formation.

Old avulsion fracture of the right ischial tuberosity which has united with new bone/heterotopic bone formation.

Narrowing of the ischio-femoral space and the new bone formation may be causing ischio-femoral impingement.

Incidental right trochanteric bursa and a small right inguinal hernia containing fat.

Case Discussion

Multimodality images of a prior ischial tuberosity avulsion fracture with heterotopic bone formation in the response to injury.

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