Dr. Nissen is a board certified orthopedic surgeon with a certificate of added qualification in Orthopedic Sports Medicine. Dr. Nissen completed his undergraduate training at Princeton University and attended medical school at the University of Connecticut. His postgraduate training was in Orthopedic Surgery at the University of Connecticut. His sports medicine fellowship was completed at Cincinnati Sports Medicine and Orthopedic Center under Dr. Frank Noyes.
Dr. Nissen is a Clinical Professor of Orthopedic Surgery at the University of Connecticut and has worked extensively with orthopedic residents and sports medicine fellows throughout his career twice earning Educator of the Year for his efforts. He is the team physician for several area high schools and colleges, Lead Team Physician for the US Lacrosse U-19 Women’s National Lacrosse team and is a consultant to Major League Lacrosse. Dr. Nissen is actively involved in research, publishing over 50 articles.
He presents regularly at regional and national meetings. His presentations and publications include research on common athletic injuries seen in adolescent and young adults with special interest in the treatment of osteochondritis dissecans (OCD), anterior cruciate ligament (ACL) injury prevention and reconstructive techniques, and injuries to the arm in Overhead Athletes.
He is a diplomat of the American Board of Orthopedic Surgery, a member of the American Orthopedic Society for Sports Medicine, the Arthroscopy Association of North America, New England Shoulder and Elbow Society, the Research in Osteochondritis Dissecans group (ROCK, Inc.), Pediatric Orthopedic Society of North America (POSNA) and the Pediatric Research in Sports Medicine (PRISM).
