I was referred by my neurologist to HSS. After years of pain, my knee was no longer capable of supporting my weight. I was nervous and scared. The decision to replace my knee was not easy to swallow. However, it was the BEST decision I ever made. Dr. DiFelice is an excellent doctor and his staff is top-notch. Is it painful? Yes. However, once you follow the directives, recovery is guaranteed and you will have your life back FULLY without pain or restrictions.