Teenager with trauma to the knee 1 month ago who is now developing new symptoms of knee pain with knee movement Pediatric Imaging Musculoskeletal December 11, 2025September 30, 2025 AP (left) and lateral (right) radiographs of the knee show an area of diffuse calcification in the muscles anterior and medial to the distal femur. The diagnosis was myositis ossificans. Related Published December 11, 2025September 30, 2025