Thanks @ellerbracke My big concern now is what am I doing at the gym that is probably the cause of this. I am fearful it might be the elliptical, which I think is such great exercise. I had been doing the treadmill but I can't get my heart rate up where I want it to be on that and I can on the elliptical. The other gym things I do on equipment are primarily upper body so I am sure they are not the problem, and I have been doing my water aerobics and jogging for years at this point so I doubt that is the problem.

I must admit, I do feel extremely fortunate that my TKRs were both as successful as they were, even though the flex is not where I would like it. I think if I had read all I have read since my last TKR I may have been much more apprehensive about it, but sometimes ignorance is bliss.

It's funny you comment on my share of problems because I considered myself to be pretty darned healthy but these days seeing how many problems I can relate to on Connect I realize I have more problems than I thought! I do not have any of the problems though that some people have that give them pain daily, so I am very thankful about that.
JK