Traumatic myositis ossificans.
D000293:Adolescent; D001265:Athletic Injuries / Q000150:complications; D005538:Football; D006801:Humans; D007869:Leg Injuries / Q000150:complications; D008297:Male; D009221:Myositis Ossificans / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D014947:Wounds and Injuries / Q000150:complications*