Hi, I am 10 days post op on my left knee replacement. I had my right one done 14 months ago. I am 54. My right one is GREAT and my left one seems to be taking the same path. I am still in some pain, but today I walked the dog (with a cane) and I find that every day my energy is increasing, my mobility is getting better, and my pain is decreasing. I really think that once you are living in constant pain, and your lifestyle is compromised because it hurts to even walk, well, it's time! Go for it, look it as a healing process that will be difficult, but well worth it in the long run! And, if you have time, start strenghten yor quads, calves etc...I think that helps in the recovery. Good Luck!