Transcapsular Buttonholing of the Proximal Ulna as a Cause for Irreducible Pediatric Anterior Elbow Dislocation

Figure 1

AP (a) and attempted lateral (b) radiographs of the right elbow demonstrating anteromedial elbow dislocation in a skeletally immature individual. The solid arrow points to the Salter-Harris radial head fracture with significant radial head displacement. The dashed arrow points to an ossific fragment near the distal humerus which likely represents the olecranon avulsion.

(a)

(b)