Okay, I have pain in all the area's you are talking about.

But so far haven't fallen because of it. I am seeing a foot doctor
for my feet, and he has sent me to a Physical Therapist for my
feet and legs.

I personally would ask if maybe you could go see a physical Therapist
to work on strengthing your muscles for one thing. Also I would
suggest that you might want to talk to a neurologist who specializes
in balance issues.

I had one send me to physical therapy also it has helped my balance
and falling problems a lot. Of course mine wasn't so much that my
muscles gave out. Or as far as I know.

Donna