Medically, what is affected by Myositis?
Myositis ossificans the elbow. Myositis ossificans Myositis ossificans comprises two syndromes characterized by heterotopic ossification (calcification) of muscle. Most (i.e. 80%) ossifications arise in the thigh or arm, and are caused by a premature return to activity after an injury. Other sites include intercostal spaces, erector spinae, pectoralis muscles, glutei, and the chest. On planar x-ray, hazy densities are sometimes noted approximately one month after injury, while the denser opacities eventually seen may not be apparent until two months have passed. The exact mechanism of myositis ossificans is not clear. Inappropriate response of stem cells in the bone against the injury or
Myositis ossificans fast-growing process. If clinical or sonographic findings are dubious and extraosseous sarcoma is suspected, biopsy should be performed. At histology, detection of the typical zonal phenomenon is diagnostic of myositis ossificans, though microscopic findings may be misleading during the early stage. The radiological features of myositis ossificans are ‘faint soft tissue calcification within 2–6 weeks, (may have well-defined bony margins by 8 weeks) separated from periosteum by lucent zone and on CT, the characteristic feature is peripheral ossification’. Since myositis ossificians is more common in those with bleeding disorders, the formation of bone in soft tissue is thought to be