Department of Mechanical Engineering, Polytechnique Montreal, Downtown Station, P.O. Box 6079, Montreal, QC, H3C 3A7, Canada. Sainte-Justine University Hospital Center, 3175, Cote Sainte-Catherine Road, Montreal, QC, H3T 1C5, Canada. Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong SAR, China. Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong SAR, China. cheungmc@hku.hk. Department of Mechanical Engineering, Polytechnique Montreal, Downtown Station, P.O. Box 6079, Montreal, QC, H3C 3A7, Canada. carl-eric.aubin@polymtl.ca. Sainte-Justine University Hospital Center, 3175, Cote Sainte-Catherine Road, Montreal, QC, H3T 1C5, Canada. carl-eric.aubin@polymtl.ca.