Once a total knee fails then we do what’s called a revision surgery where we take the replaced knee out and put in a new knee. Usually it involves a little bit more intricate work and we have to use a little bigger prosthesis. Once patients have had a total knee arthroplasty they should expect to have much of their pain relieved. They should be able to sleep through the night. They should be able to get up and perform activities as they once were able to before they’re knee pain became limiting.