PMC5686223_01
(a,b) In the initial X-ray scan, the white arrow indicates the shaft fracture of the radial bicipital tuberosity; (c,d) at 1 year after surgery, the fracture of the radial bicipital tuberosity demonstrates bony union.
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Radiographs revealed an isolated fracture through the radial bicipital tuberosity as well as osteoarthritis of the distal radioulnar joint (Fig. 1, Fig. 2). One year later, the patient did not have any difficulties in activities of daily living, but the range of motion of his elbow joint was limited to -10  extension, 110  flexion, 10  supination, and 45  pronation (Fig. 1); his Disabilities of the Arm, Shoulder and Hand score was 19.4, and he was satisfied by the treatment.
(a) On supination, the plate does not impinge upon the proximal radioulnar joint; (b) on pronation, the posterior interosseous nerve was retracted away from the fracture while the plate was applied.
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Then, the placement of the plate was determined after confirming that there was no obstacle to rotation on pronation and supination (Fig. 3), and it was placed opposite to the attachment point of the biceps tendon.