1. Shoulder, Elbow and Orthopaedic Sports Medicine, Bern, Switzerland;
2. Shoulder, Elbow and Orthopaedic Sports Medicine, Sonnenhof Orthopaedics, Bern, Switzerland;
3. Department of Orthopaedic Surgery, University of Calgary, Calgary, AB, Canada;
4. Department of Radiology, Sonnenhof Hospital, Bern, Switzerland; and
5. Shoulder and Elbow, Department of Orthopaedic Surgery and Traumatology, Inselspital, Bern University Hospital, Bern, Switzerland.