I was standing on a ladder on the next to top step, and holding a board in my two hands, when I got a cramp in my back. I twisted to the right to releave the cramp but it didn't go away. I felt the cramp move around my left chest area from the left rear to my left front. I felt the pain it was very severe. My doctor said I had a torn pectoral muscle, but the pain isn't in my pectoral area, more like below that area. After one year I still have the pain.
It doesn't hurt when I breath or stretch, it comes and goes.