aSandwell and City Hospitals, West Midlands, UK
bDerriford Hospital, Plymouth NHS Trust, UK
cAlexandria School of Medicine, Alexandria, Egypt
dUniversity of Birmingham, Queen Elizabeth Hospital, Birmingham, UK
eBrighton and Sussex University Hospital, East Sussex, UK
Financial disclosure: The authors have no disclosures and report no conflicts of interest in regard to this work.
Correspondence to Ahmed El-Bakoury, MBCHB, MCh Orth(Alex), FRCS (Tr-Orth), Senior Arthroplasty Fellow, Department of Trauma & Orthopaedics, Level 11, Derriford Hospital, Plymouth NHS Trust, Derriford Road, Plymouth PL6 8DH, United Kingdom Tel: +00447598079309; fax: +00448451558235; e-mail: firstname.lastname@example.org; email@example.com.