1. Department of Trauma & Orthopaedics, ST4 Orthopaedic Registrar Leeds General Infirmary MRCSEd, Great George St, Leeds LS1 3EX, UK
2. Department of Trauma & Orthopaedics, Orthopaedic Registrar Oxford University Hospital MRCS, Headley Way, Headington, Oxford OX3 9DU, UK
3. Department of Trauma & Orthopaedics, Orthopaedic Registrar Royal Infirmary of Edinburgh FRCSEd (T&O), 51 Little France Cres, Old Dalkeith Rd, Edinburgh EH16 4SA, UK
4. Medical Sciences Divisional Office, University of Oxford, Level 3, John Radcliffe Hospital, Oxford OX3 9DU, UK
5. Department of Trauma & Orthopaedics, Trauma Fellow, John Radcliffe Hospital Oxford, FRCS(T&O), Headley Way, Headington, Oxford OX3 9DU, UK