Steven J. MacDonald
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About
Steven J. MacDonald is a leading orthopaedic surgeon and researcher whose work has fundamentally advanced the understanding and treatment of joint mechanics, particularly in the context of total hip and knee arthroplasty. His research centers on the biomechanics of joint replacement, the measurement of in vivo joint kinematics, and the clinical outcomes of implant design. MacDonald is perhaps best known for pioneering the use of conventional single-perspective flat-panel radiography to accurately measure three-dimensional joint motion, a technique that has enabled unprecedented insights into how artificial joints function inside the body after surgery. This work, detailed in his highly cited 2012 study, has provided a safer, more accessible method for studying joint kinematics, directly impacting implant evaluation and rehabilitation protocols. With over 200 peer-reviewed publications and thousands of citations, his contributions have shaped modern orthopaedic practice. A prolific educator and clinician, MacDonald has also held leadership roles in major orthopaedic societies, and his research continues to guide the development of more durable, patient-specific joint replacements.
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