Thanks Mab. Interesting comment on post op quad strength. I had a friend who did exactly what I did and got his quads and hamstrings as strong as possible pre surgery. After surgery, the quads on the operated leg looked like they had atrophied - I mean there was nothing, no muscle to see. And it happened quickly and this guy is a gym rat.

This happens to some people. I didn't experience it. If it does happen, patience is required and slow, steady work to rebuild the quads.

The surgeon has to make a small incision into one of the quad muscles to release the patella so it can be moved aside during surgery. I'm guessing it's possible this weakens the quad to the point that it can't be exercised for a while post op. I don't know what else could cause it.

Finally I hope you reconsider getting your other knee replaced. My suggestion - if it affects your gait and is painful everyday, get the surgery. Cortisone only works so well and for so long when the bones are touching. And stem cell solutions are promising to regrow cartilage, but probably a long way from reality.

All the best to you!