Dr Lange performed total knee replacements on both my right and left knee about one year apart. The first knee is now about 14 months old. It is fully functional and I am overjoyed with the results. The second knee is only about two months old and I am still in the midst of physical therapy but all indications are that it will be an equal success. I am very happy with all aspects of my dealings with Dr Lange and his staff. From the very beginning I felt I was in the care of the most highly qualified professional. Dr Lange was careful to explain every detail of the proceedure to me. His obvious level of expertise and reputation in the athletic community gave me a high level of confidence and I felt very comfortable putting my future mobility in his hands. His staff were all very professional and dependable. If I had three knees I’d trust him with them all!