Dr Terence McLoughlin, Academic Foundation Programme Year 2 doctor, The Royal London Hospital, North East London Deanery, UK Dr Ian Baxter, Academic Foundation Programme Year 1 doctor, The Northern General Hospital, Yorkshire and the Humber Deanery, UK Dr Nicole Abdul, Academic Foundation Programme Year 1 doctor, The Northern General Hospital, Yorkshire and the Humber Deanery, UK Editorial Advisors: Mr Andrew Hamer, Consultant Orthopaedic Surgeon, The Northern General Hospital, Sheffield, UK