I totally understand. I am headed towards tkr and I'm scared silly about it - for no rational reason, just scared. But I can't continue with this pain either, so I know, rationally, this is the right action and I just keep telling myself whatever comes up, I'll deal with it then. I'm always telling others, "Don't borrow trouble." Guess I need to listen to my own advice! Good luck and I hope it all goes well.