Joseph K Kendal1, Nathan Evaniew1, Ganesh Swamy2. 1. Section of Orthopaedic Surgery (Kendal, Evaniew, Swamy), Department of Surgery, and McCaig Institute for Bone and Joint Health (Kendal, Swamy), University of Calgary, Calgary, Alta. 2. Section of Orthopaedic Surgery (Kendal, Evaniew, Swamy), Department of Surgery, and McCaig Institute for Bone and Joint Health (Kendal, Swamy), University of Calgary, Calgary, Alta. gswamy@ucalgary.ca.