Dr. Cynthia Kahlenberg is an orthopedic surgeon at the Hospital for Special Surgery specializing total hip replacement, total knee replacement, and partial knee replacement for active adults who want to get back to the activities they love.. She performs both anterior and posterior hip replacement. Dr. Kahlenberg uses computer navigation and minimally invasive techniques to achieve individualized patient treatment goals while utilizing the latest surgical techniques, technology, and research to provide the best possible care and outcomes for her patients.