It has been reported that some patients have been misdiagnosed with Myositis Ossificans, when in fact the correct diagnosis in their specific case was Bone Cancer.
Bone cancers usually begin in the pelvis or long bones of the arms and legs. It is so rare that it makes up less than 1% of all cancers. There are three types: chondrosarcoma, Ewing sarcoma and osteosarcoma. Symptoms include bone pain, swelling and tenderness near the affected area, weakened bone, easily fractured bones, fatigue and weight loss. Bone cancers can be misdiagnosed as cortical desmoid, Brodie abscess (cystic osteomyelitis), synovial herniation pits, enostosis, intraosseous ganglion cyst, fibrous dysplasia, stress fractures, bone infarcts, myositis ossificans, brown tumours, and subchondral cysts.