1. Department of Orthopaedic Surgery, University of Palermo (Di.Chir.On.S), Palermo, Italy
2. Department of Industrial and Digital Innovation (DIID) Chemical, Management, Computer, Mechanical Engineering, Viale delle Scienze ed.8, I-90128 Palermo
3. Department of Orthopaedic Surgery, University of Pisa, Pisa, Italy