Hi I am new to this, my name is Debbie and had a subtalor fusion on my foot with a screw in my heel but my problem is my foot will not heal. I am in chronic pain all the time and was just given a tens unit but I still hurt even after I use it. Has anyone had this problem of after having surgery you don't heal? As my DR. says I'm just a slow healer but I swear I am getting worse? My surgery was done on March 17th. I need help as no one seems to have an anser for me so please help me.