Hi Ada:

I have that problem with my right heel. (the one I broke). Cement surfaces give me all sorts of trouble if I have to walk or stand on them too long. I haven't found anything that will completely take the problem away. I do however lessen some of the impact by wearing soft cotton socks and athletic shoes with the thicker soles. I know the shoes cost a lot more but some things you do have to pay for if you want the results.

Like Artist said, break your walks up. Maybe go 2 or 3 times a day for shorter distances. Or maybe if you could get something with a little bit of a heel to shift your weight/balance more to the balls of your feet and toes.

Good luck with it. I wouldn't want to give up my walks.

Hugs and Prayers