Get the permanent one. No charge in MN for getting one, (lasts 5 years I think, then must be renewed) but regulations/cost may vary state to state.

If you need it, you need it. Walking can be difficult for many of us with CRPS.

I don't have one for myself, but I did get one for my 89 year old mother who lives in a nursing home and it is an absolute godsend when I have to take her anywhere!!

Take care of yourself.