Dr. Steven J. MacDonald is a Professor of Orthopaedic Surgery at Western University, Chief of Orthopaedics and Chief of Surgery, at London Health Sciences Centre, University Campus in London, Ontario. He is a native of London, Ontario and received his undergraduate Bachelor of Science Degree at Western. He then received his medical degree from the University of Toronto and returned to Western for his orthopaedic training.

Further training as an adult reconstructive fellow was obtained in Chicago, Illinois and in Bern, Switzerland. Dr. MacDonald has won many awards including, twice the John Charnley award from the Hip Society, the Frank Stinchfield award from the Hip Society, the Insall Award from the Knee Society and the Founders Medal from the Canadian Orthopaedic Research Society. Dr. MacDonald is a member of multiple orthopaedic organizations including the North American Hip Society, the International Hip Society and the North American Knee Society. Dr. MacDonald has been awarded 25 research grants for hip and knee replacement projects. He has published over 120 papers in research journals in the field of hip and knee surgery. He has lectured at over 200 national and international meetings. His current focus of research includes multiple randomized clinical trials on hip and knee replacements including the evaluation of new technology.