1. Residency Program in Orthopaedics and Traumatology, University of Milan, 20122 Milan, Italy
2. IRCCS Ospedale Galeazzi Sant’ambrogio, 20157 Milan, Italy
3. Department of Plastic Surgery, University of Pittsburgh Medical Center, 1350 Locust Street, Pittsburgh, PA 15213, USA
4. Department of Biomedical Sciences for Health, University of Milan, 20122 Milan, Italy