I have had both knees done.The left one -8 years ago, and the right one was done in April. The techniques have come a long way. The doctors said I was too young ,43 for the first one. But when you are in so much pain--- just how young do you feel. The PT sucks , but keep at it , it helps. When I slack off on it , because I would rather sit and sew, I get so stiff and have to start working on it again. Why put up with years of pain, it won't get any cheaper or any better for you.