1 Division of Orthopaedic Surgery, Department of Surgery, McMaster University, 1200 Main St West, 4E15, Hamilton, ON, L8N 3Z5, Canada.
2 Department of Orthopaedic Surgery, Stanford University Medical Center, 450 Broadway St, Pavillion A, Redwood City, CA, 94063, USA.
3 Division of Orthopaedic Surgery, Department of Surgery, McMaster University, 1200 Main St West, 4E15, Hamilton, ON, L8N 3Z5, Canada. ayenif@mcmaster.ca.