1 Department of Orthopaedic Surgery and Traumatology, Kantonsspital Baselland (Bruderholz, Liestal, Laufen), 4101, Bruderholz, Switzerland. michael.hirschmann@ksbl.ch.
2 University of Basel, Basel, Switzerland. michael.hirschmann@ksbl.ch.
3 Department of Orthopaedics and Traumatology, Brandenburg Medical School Theodore Fontane, 14770, Brandenburg, Germany.
4 Ortoklinik and Cankaya Orthopedics, Ankara, Turkey.
5 Department of Surgery, Maisonneuve-Rosemont Hospital, Montreal University, Montreal, QC, Canada.
6 Professor of Biomedical Engineering, University of California at Davis, Davis, USA.