Was wondering if anyone has had a knee cap replacement? My doctor is going to do ortho on me on the 25th of May on my right knee and he said that I may need to have the knee cap replaced but would not know until he did the initial surgery. I've already had surgery on my left knee and am going to need TKR on that knee in the near future. I'll be 56 the end of May and am fairly active. Thanks for any suggestions!