1. Edinburgh Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, UK
2. Department of Orthopaedics, Royal National Orthopaedic Hospital NHS Trust, London, UK
3. Department of Orthopaedics, University College London Hospitals, The Princess Grace Hospital, and The NIHR Biomedical Research Centre at UCLH, London, UK
4. The Bone & Joint Journal , London, UK
5. Department of Orthopaedics and Trauma, University of Edinburgh, Edinburgh, UK