@happyat76 choosing a good surgeon is probably the most important thing, so ask around and read on the web reviews of surgeons in your area. Also, take a look at the different companies that make knee components and read about them. I had Makoplasty (robotic arm, guided by surgeon), made by Stryker, and am happy with it although only 6 weeks out so time will tell. Others have had great results with the custom knees made by Conformis. I still think a good surgeon and good prehab is the best predictor of results, but the knees also are important. Good luck.