1. Trauma and Orthopaedic Department, James Cook University Hospital, Middlesbrough, UK
2. Nuffield Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre, Oxford, UK
3. Heatherwood and Wexham Park Hospitals Trust, Berkshire, UK
4. North Tees and Hartlepool NHS Foundation Trust, Stockton on Tees, UK
5. Faculty of Medical Sciences & NDORMS, University of Oxford, Oxford, UK