1. Department of Orthopaedic Surgery and Traumatology, General Hospital Oberndorf, Paracelsusstraße 37, 5110 Oberndorf, Austria
2. Department of Orthopedics, Balgrist University Hospital, 8008 Zürich, Switzerland
3. Department of Orthopaedic Surgery, Royal Melbourne Hospital, 300 Grattan Street, Parkville, Melbourne, VIC 3050, Australia
4. Department of Biomedical Engineering, University of Melbourne, Parkville, Melbourne, VIC 3010, Australia