1. Ankle and Foot Surgery Unit, Department of Traumatology and Orthopaedic Surgery, University Hospital Ramón y Cajal, 28034 Madrid, Spain
2. Department of Traumatology and Orthopaedic Surgery, Sanchinarro University Hospital, 28050 Madrid, Spain
3. Institute of Sport, Nursing, and Allied Health, University of Chichester, Chichister PO19 6PE, UK
4. Physiotherapy Department, Valencia Catholic University of Valencia, 46900 Valencia, Spain
5. Institute for Research on Musculoskeletal Disorders, School of Medicine, Valencia Catholic University, 46001 Valencia, Spain
6. Department of Orthopedic Surgery and Traumatology, University Hospital of Badajoz, 06080 Badajoz, Spain