Post-traumatic myositis ossificans

Abstract

Post-traumatic myositis ossificans (PTMO) is characterised by abnormal heterotopic boneformation involving striated muscle. PTMO is usually associated with trauma and is most common in the second and third decades. An important teaching point is that in the early or subacute phase, clinical and imaging features can mimic a soft-tissue sarcoma. A combination of imaging modalities is required to evaluate the muscle lesion.