Myositis ossificans

Myositis ossificans is a fairly common disorder that typically involves progressive heterotropic bone formation. A typical case is discussed in this paper. The radiographic findings in myositis ossificans are relevant in differentiating it from a malignant bone tumor and a benign process. Myositis ossificans can cause impairment to a joint with poor rehabilitative results. Limitation of joint function and little reabsorption of the heterotopic bone formation is common. Most cases are posttraumatically related with the brachialis and the quadricep femoris muscles frequently involved. This is especially true for sport injuries.