@cobweb That's great that you are getting relief from PRP. I have actually never known anyone who had that, is it covered by insurance?
I think when you go to sites such as this and read about knee replacements you have to keep in mind that most often the people who are looking for information are the ones who have had problems. Those of us who have had great TKRs are much less apt to have a need to seek out information.
If at some point you do decide to have a second TKR just make sure you research and get the possible surgeon who you can. In my opinion, that is what makes the biggest difference in the success or failure of the surgery. I have never regretted having the TKRs. I was limited in how far I could walk before and now I can walk forever -- well, almost.
JK