Hilary Mary M. Clayton is a veterinarian, researcher, and horsewoman. For more than 50 years, she has performed innovative research in equine locomotor biomechanics, sport horse performance, lameness, conditioning programs for equine athletes, tack and its interaction with horse and rider, lameness, and rehabilitation.. She has published eight books and more than 300 peer-reviewed papers on these topics. Dr. Clayton served as the Mary Anne McPhail Dressage Chair in Equine Sports Medicine at Michigan State University’s College of Veterinary Medicine from 1997 until she retired from academia in 2014. She continues to perform collaborative research with colleagues in universities around the world. As a result of her belief in treating the entire equine athlete rather than using a systems approach, she devoted many years to the formation of the American College of Veterinary Sports Medicine and Rehabilitation. She is a founder member, charter diplomate and past president of the College. She has been inducted into the Roemer Foundation/USDF Hall of Fame, the International Equine Veterinarians Hall of Fame, the Midwest Dressage Association Hall of Fame, and the Saskatoon Sports Hall of Fame. She is also an Honorary Fellow of the International Society for Equitation Science. Dr. Clayton is a lifelong rider and has competed in many equestrian sports, most recently focusing on dressage, in which she trains through the Grand Prix level.