I'm not a good candidate for knee replacement surgery because I developed thick scar tissues or keloids after all the 4 surgeries I had. The scar from surgery I had 30 yrs ago, still raised and sometime still itch. My doctor had removed the scars but they would eventually come back after 6-12 mos! I know I will develop thick scars for all my wounds! Not looking forward to the prospect of needing TKR in the near or far future. I'm 78 and the doctor told me there is no need to repair my torn meniscus because my knee pain is caused by arthritis! In the mean time to lessen the pain, he recommends injection, Advil, ice and then TKR when I have tried everything else! He won't do TKR after age 85!