1. Department of Orthopaedic Surgery, “Infanta Elena” University Hospital, Valdemoro, Madrid, Spain
2. Faculty of Medicine, Universidad Francisco de Vitoria, Madrid, Spain
3. Department of Orthopaedic Surgery, “La Paz” University Hospital, Madrid, Spain
4. Osteoarticular Surgery Research, Hospital La Paz Institute for Health Research – IdiPAZ (La Paz University Hospital – Autonomous University of Madrid), Madrid, Spain