Which of the Following Is True About Myositis Ossificans (Heterotopic

Which of the following is true about myositis ossificans (heterotopic bone formation) in the elbow region?

A) The muscle most often affected in the elbow region is the biceps brachii.
B) It is distinguished from traumatic arthritis of the humeroulnar joint in that passive extension is more limited than flexion.
C) After the acute inflammatory period, heterotopic bone is laid down within muscle fibers and within the joint.
D) Before the bony mass in the muscle has matured, the muscle should be stretched and massaged regularly to prevent a contracture.