Myositis Ossificans Thigh

Myositis ossificans usually occurs where a person has experienced a single traumatic injury such as sustaining a hit while playing football or soccer that causes a deep muscle bruise.

Myositis ossificans thigh. Myositis ossificans is a benign meta plasmatic mostly self limiting process in which bone or bone like tissue formation takes place in skeletal muscle. Myositis ossificans can also occur in other muscles. The ct scan demonstrates a curvilinear area of ossification lying adjacent to the lateral aspect of the mid left femoral shaft. Myositis ossificans mo occurs when bone or bone like tissue grows where it s not supposed to.

Myositis ossificans is a benign condition resulting from severe muscular contusion manifested by heterotrophic bone formation. In the first and by far most common type nonhereditary myositis ossificans commonly referred to simply as myositis ossificans as in the remainder of this article calcifications occur at the site of injured muscle most commonly in the arms or in the quadriceps of the thighs. It most commonly happens in your muscle after an injury like when you get hit hard in the thigh. Ten cases of the condition in the upper arm were seen in our practice.

Bony tissue formation can occur 2 4 weeks after the muscle injury or bruise. However myositis ossificans only occurs in 9 17 of muscle bruises. Myositis ossificans develops some time after a contusion or blow to a muscle usually in the thigh. Myositis ossificans is an uncommon condition that may occur following a thigh contusion bruised thigh and is characterized by bone formation calcification in the muscle belly at the site of the bruise.

It is most common in the thigh muscles which include the hamstrings and quadriceps the muscles in the back and front of the thigh respectively. The athlete will have a restricted range of movement in the leg and a hard lump may be felt deep in the muscle. The large muscle group at the front of your thigh is called the quadriceps figure 1. An x ray can confirm the diagnosis and show bone growth.

The process is common in the anterior thigh but the literature dealing with myositis ossificans in the upper arm is limited.