Fig. 6

A 9-year-old boy classified type IV injury in right elbow. a A-P view of X-ray film show fracture in coronal plane of olecranon with displacement less than two thirds of ulna (arrow) associated with radial neck fracture with angulation less than 30°. b 3D reconstructed image of CT scan show the precise injury complex. c A-P view of X-ray film shows this boy was treated with open reduction and internal fixation with locking-plate for olecranon and close reduction and internal fixation with ESIN for radial neck; the broad of olecranon in coronal plane was corrected. d Three months postoperation, A-P view of X-ray film show the olecranon and radial neck fracture healed without malunion. e Six months postoperation, A-P view of X-ray film shows no radial head subluxation could be observed after the ESIN and plate removed; the flexion, extension, pronation, and supination were normal.