Affiliation: | 1. Dorset County Hospital, Department of Orthopaedics, Williams Ave, Dorchester, DT1 2JY, UK;2. Guy''s and St Thomas'' NHS Foundation Hospital, Department of Orthopaedics, Great Maze Pondon, London SE1 9RT, UK;3. Fortius Clinic, 17 Fitzhardinge Street, London W1H 6EQ, UK |