1Dipartimento di scienze biomediche per la salute, Università degli studi di Milano, Milan, Italy
2Department of Orthopaedic and Traumatology, Policlinico San Donato, San Donato, Italy
3Department of Trauma and Orthopaedics, King’s College Hospital, London Bridge Hospital, London, UK
4Department of Orthopaedics and Traumatology, University of Torino, Torino, Italy
5Department of Orthopaedic Surgery, The Princess Royal Hospital, Telford, Shropshire, UK
6Department of Orthopaedic Surgery, Faculty of Medicine, School of Health Sciences, University of Thessaly, 41110 Mezourlo area, Larissa, Greece
7Orthopedic Department, Caen University Hospital Comete, Caen University Hospital, Caen, France
8Department of Orthopaedics, Hatanpää Hospital, 437, Tampere, FIN-33101, Finland
9Department of Orthopaedics and Traumatology, Acibadem University School of Medicine, Istanbul, Turkey
10Department of Orthopedic Surgery, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
11Department of Orthopaedics, Erasmus Medical Center, Rotterdam, The Netherlands
12Institute for Anatomy and Cellbiology, Ruprecht-Karls University Heidelberg & HKF: Center for Hip-Knee-Foot Surgery, ATOS Hospital Heidelberg, Heidelberg, Germany
13Division of Orthopaedics and Traumatology, Department of Trauma, Musculoskeletal Surgery and Rehabilitation, Tampere University Hospital, Teiskontie 35, 33520 Tampere, Finland
14Dipartimento Scienze Biomediche per la Salute, Università degli Studi di Milano, Milan, Italy