aDepartment of Orthopaedic Surgery and Traumatology, Hospital Universitario 12 de Octubre, Madrid, Spain

bSurgery Department, Universidad Complutense, Madrid, Spain

cDepartment of Orthopaedic Surgery and Traumatology, Hospital Vithas La Milagrosa, Madrid, Spain

dDepartment of Orthopaedic Surgery and Traumatology, Hospital Viamed Santa Elena, Madrid, Spain

eDepartment of Radiology, Hospital Universitario 12 de Octubre, Madrid, Spain

Financial Disclosure: The authors declare no conflicts of interest.

Written informed consent was obtained from the patient(s) for their anonymized information to be published in this article

J.M.G.L. wrote the first draft of the manuscript. D.L.C. reviewed and edited the manuscript and approved the final version of the manuscript. M.C.M.S M.S. reviewed and edited the manuscript and approved the final version of the manuscript.

Correspondence to Jose Maria Garcia Lopez, MD, Calle Tellez, 30, Madrid, 28007, Spain. Tel: 671067652 e-mail: [email protected]