Myositis ossificans in the infraspinatus muscle: The key to diagnosis

Abstract

The zone phenomenon is the most important diagnostic feature in differentiating myositis ossificans from malignancies such as osteosarcomas, which calcify from the center to the periphery and its presence in our late-stage lesion was the key to diagnosis.

Keywords: heterotopic ossification; infraspinatus muscle; myositis ossificans; zonal pattern; zone phenomenon.