1. 1st Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
2. Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna
3. Unit of Orthopaedic-Traumatology and Prosthetic Surgery and Revisions of Hip and Knee Implants, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy