[ithacaartist]

My mom had both knees done, one at a time. Same story with my aunt. Though both are deceased now, the retrofits ultimately relieved their pain and restored their comfortable and effective mobility, at least for their knees. Hardware design in the decade or so since they had it done has only progressed (sports medicine drives the breakthroughs, but all benefit from the advances), so I'd say go into it knowing the outcome is going to be way better than you feel today, when you become a bionic man!