Last summer I noticed that my heels started to feel numb at the back of both heels. I walk on concrete floors at work and spend a lot of time on my feet. Prior to this summer I wore custom orthotics to help with pain from high rigid arches in both feet. The orthotics I had (not true orthotics, but feet stabilizers from a chiroprator) were uncomfortable and hard so I stopped wearing them at the advice of my podiatrist. I have been going to a podiatrist for cortisone injections into my ankles and for custom orthotics for the past 8 months. So far no relief and it has been a struggle to have orthotics made that actuallly fit and feel comfortable. Does anyone know how or why tarsal tunnel starts and what is the most effective treatment for it? Thanks.