When I was young I tore a ligament in my leg and it snapped just like a broken rubber band. That is what this is like but it is not actually broken. My arm pain gets better and then worse but I can always get the snap when I put it in the wrong position. The pain is very bad like being stabbed. There are times my arm just aches especially at night. It is very strange that elevating my upper body keeps me the most comfortable. I don't know why that would affect my arm unless it is blood flow. For a couple of days it felt so good I quit therapy but now it is coming back. I can't use it or I make it worse.
I always get better - just wait it out - but this has been almost three months.