1. Orthopedic and Trauma Surgery Department, Hospital Central de la Defensa “Gómez Ulla”, 28047 Madrid, Spain
2. Anesthesiology, Reanimation and Pain Treatment Unit, Hospital Central de la Defensa “Gómez Ulla”, 28047 Madrid, Spain
3. Department of Surgery, Complutense University of Madrid, 28040 Madrid, Spain
4. Head of Orthopedic and Trauma Surgery Unit, Hospital Central de la Defensa “Gómez Ulla”, 28047 Madrid, Spain