1. Department of Orthopedic Surgery and Trauma, Galdakao-Usansolo Hospital, Bizkaia, Spain
2. Group of Lower Limb Reconstrutive Surgery, Biocruces Bizkaia Health Research Institute, Osakidetza, Bizkaia, Spain
3. Department of Orthopedic Surgery and Trauma, Cruces Hospital-Barakaldo, Bizkaia, Spain
4. Health Services Research on Chronic Diseases Network (REDISSEC) Research Unit, Galdakao-Usansolo Hospital, Bizkaia, Spain