1Department of Engineering, University of Campania “Luigi Vanvitelli”, 81031 Aversa, Italy
2Institute for Biomedical and Neural Engineering, Reykjavik University, 101 Reykjavik, Iceland
3Department of Science, Landspitali University Hospital, 101 Reykjavik, Iceland
4Department of Orthopaedic Surgery, Landspitali University Hospital, University of Iceland, 101 Reykjavik, Iceland
5Department of Structures for Engineering and Architecture, University of Napoli Federico II, 80125 Napoli, Italy