Functional Outcome after Simultaneous Bilateral Four-Part Proximal Humerus Fracture: A Comparison of ORIF and Hemiarthroplasty in an Individual Patient.

Simultaneous bilateral four-part proximal humeral fractures are rare. Four-part fractures of the proximal humerus are difficult for the patient and technically demanding for the surgeon. Our surgical tactic is to attempt open reduction and internal fixation where possible. We report the functional outcome in a 56-year-old female who sustained simultaneous bilateral four-part proximal humeral fractures after falling down a flight of stairs. Open reduction and internal fixation using threaded pins and tension band suture was performed on one side, and shoulder replacement hemiarthroplasty was required on the other. Functional assessment was undertaken at two years after surgery, using the Oxford Shoulder Score. Although the objective outcomes assessment revealed little difference, the patient herself expressed a preference for the side treated by internal fixation. We conclude that an attempt to retain the native humeral head and the surgical tactic that favours internal fixation where possible is appropriate in these injuries. Excellent function can be achieved following hemiarthroplasty for trauma in a fit patient.