Fig. 1

Lateral radiograph of the elbow in a 42-year-old-male patient with comminuted fracture of proximal ulna, combined with fracture of coronoid process and anterior dislocation of distal complex of fracture (a); Lateral radiograph of the elbow in a 14-year-old boy (case 4) with transverse fracture of olecranon, small proximal fracture fragment, combined with anterior dislocation of distal complex of fracture, no involvement of coronoid process (b)