M61.0: Myositis ossificans traumatica

Myositis ossificans traumatica is a condition where bone tissue forms within a muscle or other soft tissues following a trauma. This is most common in the large muscles of the arms or legs, particularly following repeated injury or significant bruises. Symptoms may include pain, swelling, and a decrease in the normal range of movement in the affected area. Although the condition begins with inflammation, as typically seen with injuries, over time, bone tissue slowly begins to develop, replacing the damaged muscle tissue. Often, this is incorrectly thought to be part of the normal healing process. The condition may lead to longer-term issues such as limited mobility and stiffness if left undiagnosed or untreated. Unlike many conditions, myositis ossificans traumatica specifically results from physical injury, not an inherent or congenital disorder. It's not a disease that can be transmitted from one person to another.