School ager with abnormal appearing forearms Pediatric Imaging Musculoskeletal November 27, 2025September 23, 2025 AP radiograph of the left forearm (left) shows shortening and bowing of the radius and positive ulnar variance. AP radiograph of the right forearm (right) shows shortening and bowing of the radius and negative ulnar variance. The diagnosis was bilateral Madelung deformity. Related Published November 27, 2025September 23, 2025