Corresponding author: Roger Emery, MD, MS, FRCS(Ed), Past President SECEC 2016-2018, Deputy International Editor of JSES – until 2010, Member of the Board of Trustees of JSES 2014-2020, Professor of Orthopaedic Surgery, Imperial College, London, UK.; St. Marys Hospital, Department of Orthopaedics, London, UK
