It is kind of fun when one of the many healthcare workers involved asks me "how long have you had pain in this knee?" And I answer "since1973" and then I just smile at them. It was in 1973 that the cartilage was removed from my knee after an exhilarating toboggan ride that ended in a bit of a crash. In spite of that, I have had a great 40 years of an active life without that cartilage. Now it has to be replaced, there is no choice.
I have my game face on and am saying "bring it on" but ya know that this is really going to cramp my style for a bit.