I appreciate the suggestions so far. I see my PCP next month, and I'm going to see if there's any chance he would prescribe one of those $$$ cushions. First I'm going to see if my insurance even covers DME.

In doing a little research, I found one thing (at least) that I'm doing wrong, and hope it doesn't come back to bite me. I do a lot of sliding/dragging myself to get off my recliner, sofa, and bed. And because of the muscle problems I've been having with my legs, I also tend to slide forward in the chair. Sliding/dragging = bad.

I have one cheap ($20-30) cushion that does seem to help. I've ordered a couple similar ones (thank God for Amazon), and I think I'll get some kind of cushion for the car. I can't imagine squirming around on that hard car seat trying to keep my legs "comfortable" is a good idea either.