1. Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
2. School of Surgery, The University of Western Australia, Crawley, Western Australia, Australia
3. Perth Radiological Clinic, Subiaco, Western Australia, Australia
4. Centre for Musculoskeletal Studies, School of Surgery, The University of Western Australia, Crawley, Western Australia, Australia
5. Centre for Orthopaedic Research, School of Surgery, The University of Western Australia, Crawley, Western Australia, Australia