The amount of pain I've been in for the last, oh, eight weeks has been incredible. My back feels like someone is digging their knuckles into my lower spine. Like there are sharp shards of bone floating in between the soft spaces used to cushion movement. It hasn't rendered me Totally immobile, but it has come awfully close. Today, however, I am pleased to report that I can walk without wanting to cry about it. Why? Well, I've been using heat patches the last three days, so either the heat has...