I know several men who have had knee replacements. The physical therapy afterward is painful at first, but most have good results.
There are new and different kinds of knee replacement, such as the ones George W. Bush had at Chicago Rush University, so be sure to consult with an orthopedics expert or two.
Thanks very much for your feedback, Mark. Keith is really wanting to hear about people who’ve had this done. I agree he needs to talk with more than one doctor.