I had TKR 16 days ago. Age 69. Not sure if one would call it elective.... arthroscopic surgery on same knee 12 months ago for torn Meniscus, torn cartilege, and arthritis on Tibia and Patella did not result in long-term relief. In spite of consistent rehab exercises for months, Supartz injections, and Cortisone. Aleve -daily- would help to some extent, but by afternoon knee would be hot, painful, and swollen. Not a fan of lifelong pain meds. (kidney, liver....) Anyway: I was able to do pretty much all I had to do — with considerable pain - , but none of the things I like to do (tennis, hiking....). So rather than wait and prostphone the inevitable, I went ahead with TKR. Turned out that Arthritis had worsened a lot, and several bone spurs had developed, so pain would only have gotten worse. I figure I’m getting more benefit out of being active at 69 and potentially have to slow down at 85, than miss out on good things now by worrying about potential revision 15 years from now.