I had this problem fifteen years ago, did all the stretches, steroid shots, ice, wraps, orthotics etc. just kept getting worse. eventually developed spurs on my heels. shut me down for several years. The podiatrist did the surgury on both feet. they make about a 1 in incision on the inside on each heel, rasp the spurs, and release the ligaments. she didn't want too but I talked her into doing both feet at the same time. I had too use surgical boots, crutches, and painkillers for about a week. as far as i am concerned it was a miracle surgery. 100% cure. Now i make sure I wear quality shoes or boots, take out the insole and put my orthotics in. my orthotics are a rigid carbon fiber, that last fourever. No problems since. the lesson i learned is that somtimes its much better to address the problem sooner than later, rater than thinking you can push your way thru. life is too short