1. Kolling Institute of Medical Research, Sydney Musculoskeletal Health, University of Sydney, St Leonards, Australia; Department of Orthopaedic Surgery, John Hunter Hospital, Newcastle, Australia
2. Kolling Institute of Medical Research, Sydney Musculoskeletal Health, University of Sydney, St Leonards, Australia; Department of Rheumatology, Royal North Shore Hospital, St Leonards, Australia
3. Centre for Health, Exercise and Sports Medicine, Department of Physical Therapy, University of Melbourne, Parkville, Australia
4. Department of Radiology, Royal Prince Alfred Hospital, Sydney, Australia
5. Department of Orthopedic Surgery, Boston Children’s Hospital, Boston, Massachusetts, USA
6. Castlereagh Imaging, St Leonards, Australia
7. Department of Radiology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
8. Orthopaedics ACT, Canberra, Australia
9. Griffith Centre of Biomedical and Rehabilitation Engineering, Menzies Health Institute Queensland, School of Allied Health Sciences, Griffith University, Gold Coast, Australia
10. Warwick Medical School, University of Warwick, and University Hospitals of Coventry and Warwickshire NHS Trust, Coventry, UK
11. Department of Orthopaedic Surgery, Western Health, Melbourne, Australia; Australian Institute for Musculoskeletal Science, The University of Melbourne and Western Health, St Albans, Australia
12. STARS Research and Education Alliance, Surgical Treatment and Rehabilitation Service, The University of Queensland and Metro North Hospital and Health Service, Brisbane, Australia; Primary Care Centre Versus Arthritis, School of Medicine, Keele University, Keele, UK
13. The Australian e-Health Research Centre, CSIRO Health and Biosecurity, Brisbane, Australia
14. Department of Radiology, Royal Prince Alfred Hospital, Sydney, Australia; Imaging and Phenotyping Laboratory, Charles Perkins Centre, University of Sydney, Camperdown, Australia; Sydney Medical School and School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Camperdown, Australia
15. Department of Rheumatology, Royal North Shore Hospital, St Leonards, Australia; NHMRC Clinical Trials Centre, University of Sydney, Camperdown, Australia
16. Sydney Orthopaedic Trauma and Reconstructive Surgery, Sydney, Australia
17. Hip Arthroscopy Australia, Richmond, Australia; St Vincent’s Private Hospital, East Melbourne, Australia
18. North Sydney Orthopaedic and Sports Medicine Centre, North Sydney, Australia
19. Macquarie University Hospital, Macquarie University, Sydney, Australia
20. Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland; Department of Rheumatology, Immunology and Allergology, University Hospital and University of Bern, Switzerland; Department Diagnostic, Interventional and Paediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
21. Hip Arthroscopy Australia, Richmond, Australia; Maroondah Hospital, Eastern Health, Ringwood East, Australia
22. Australian Institute for Musculoskeletal Science, The University of Melbourne and Western Health, St Albans, Australia; STARS Research and Education Alliance, Surgical Treatment and Rehabilitation Service, The University of Queensland and Metro North Hospital and Health Service, Brisbane, Australia
23. Investigation performed at the University of Sydney, Camperdown, Australia, and University of Melbourne, Melbourne, Australia