Unilateral myositis ossificans traumatica of medial pterygoid muscle: Case report and review

Abstract

Myositis ossificans is a rare disease that is characterized by nonneoplastic, heterotopic bone formation within a muscle. It rarely involves the masticatory muscles. Since 2001 to 2015 only 20 cases involving the masticatory muscles have been reported. This case report is one such rare case of myositis ossificans traumatica involving left medial pterygoid muscle in a 37 year-old female patient. Surgical excision of the entire muscle was done and adequate mouth opening was achieved. One-year post surgery no signs of recurrence was observed and there was presence of adequate mouth opening. The article also reviews the literature of myositis ossificans of the masticatory muscles.