Dr. Gregory S. DiFelice is a fellowship-trained orthopaedic surgeon specializing in Sports Traumatology and Joint Reconstruction Surgery at Hospital for Special Surgery in New York City. He also holds an academic appointment at the Weill Medical College of Cornell University as an Associate Attending Orthopaedic Surgeon.

Dr. DiFelice is a surgical innovator and pioneer of the nuanced Preservation First ® approach to treating soft tissue injuries. Using both non-surgical and surgical methods, he strives to utilize the latest technologies to improve patient outcomes, while preserving their native tissues.

The DiFelice Foundation for Orthopaedics, his research foundation, has been a world leader in research focusing on Primary Repair of the ligaments of the knee including the regular use of the Internal Brace. He has published and lectured extensively, both domestically and internationally, on these topics and others during his 23 years of practice.