Dr. Warner completed his medical degree and residency at the University of Rochester School of Medicine, NY, followed by a combined Harvard orthopedic surgery residency. He subsequently completed multiple research and clinical fellowships. At the University of Pittsburgh, Dr. Warner directed the Shoulder Biomechanics Laboratory and was Chief of the Shoulder Service as well as Associate Director of the Sports Medicine Center; Since coming to Harvard, he created the Shoulder Biomechanics Group and is the founder of the Boston Shoulder Institute, New England Shoulder and Elbow Society and the Codman Shoulder Society. Dr. Warner is a professor in the Harvard Combined Orthopaedic Program and chief of Shoulder Service at Partners Dept. of Orthopaedic Surgery. He is former President of the American Shoulder and Elbow Society.