Post-assault myositis ossificans of the masseter muscle: A case report.

Myositis ossificans (MO) is a reactive, localized, benign lesion that typically affects the extremities in younger people. It is a unique and uncommon condition that has been difficult to fully understand regarding its causes, development, and effective treatment. Commonly seen in muscles of arms, and thighs, it seldom includes the masticatory muscles. Severe trismus results if it affects the masticatory muscles. Magnetic resonance imaging and computed tomography scans are useful methods for identifying the calcified mass. Histopathology is essential for achieving an accurate diagnosis and planning subsequent treatment strategies. This report describes the case of a 30-year-old male patient who came with a complaint of pain during mouth opening for 1 month.