I've been told after having my hinged knee for 2 years (if it fails)not that I think it's ever been successful an amputation or fusing are my only other options. I previously had a replacement and a revision less than 2 yrs later. I'm 72. Hoping I don't have to make another decision on it. i.e. hope I die before 80!!!!! Life is not enjoyable as walking moving and all other activities are so dreadfully painful. Will not have my other knee done. Had a great surgeon and sought 2 other opinions. All in agreeance. I'm just the odd man out on this. Sometimes it just sucks!!!!