Amy Grant
my deepest sympathy in your ailment!Having suffered from the disease in the past ,The one true cure to it is for you to get some orthotic supports and wear them regularly .cortisone injections to the heel may help you too..i've tried all kinds of exercises and massage therapy but the best exercise and the most convenient one i can recommend is..with your feet halfway on the steps of your stairs,with the heels almost falling down,try stretching them in an up and down motion till you feel the stretching motionin your heel muscles.Lots of luck!