1. Department of Orthopaedic Surgery and Traumatology, Hospital General Universitario Gregorio Marañón, C. Dr. Esquerdo 46, 28007, Madrid, Spain
2. Department of Orthopaedic Surgery and Traumatology, Hospital Virgen del Mar, Almería, Spain
3. Neuroscience and Health Science Department, University of Almeria, Almeria, Spain
4. Department of Orthopaedic Surgery and Traumatology, Hospital Clínico Universitario, C/ Profesor Martín Lagos S/N, 28040, Madrid, Spain
5. Department of Orthopaedic Surgery and Traumatology, Hospital Fundación Alcorcón, Madrid, Spain
6. Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, USA