Introduction: Myositis ossificans traumatica (MOT) is known mostly in the orthopedic literature as non-neoplastic, heterotopic bone formation within muscle or fascia, presumably due to acute trauma or repeated injury. Myositis ossificans traumatica of the masseter muscle is uncommon disease producing limitation of opening of the jaws. Purpose: To present a case of MOT of the masseter muscle in ...

Fibrodysplasia ossificans progressiva is a rare and disabling syndrome, which is characterized by heterotopic ossifications and skeletal deformities. So far, around 200 patients with fibrodysplasia ossificans progressiva have been reported in the world literature. Herein, we analyze the clinical records of 7 known cases of fibrodysplasia ossificans progressiva from Iran who were admitted to the...

We report the case of a parosteal osteosarcoma of the distal ulna, treated with wide resection without reconstruction. The patient developed lung metastasis and a mass in the interosseus membrane of the forearm proximally to the osteotomy. The lung mass was found to be a metastasis from parosteal osteosarcoma and the biopsy of the forearm mass revealed a myositis ossificans. The suspicion of a ...

In this report, we present a case of myositis ossificans traumatica (MOT) of the medial pterygoid muscle that had developed after mandibular block anesthesia administered for endodontic treatment of the lower right second molar, demonstrating typical features of this condition. MOT should be considered as a differential diagnosis when there is severe limitation of jaw opening and an associated ...

Myositis ossificans traumatica is an unusual complication following a muscle contusion injury. A significantly large myositic mass causing ankylosis of the elbow is even rarer. We report a 13-year-old boy who presented with a 14-month history of a fixed elbow with no movement and a palpable bony mass in the anterior aspect of the elbow. He had sustained significant trauma to the affected limb 1...