Originally Posted by HIPCHIP

That sounds like a muscle imbalance more than anything. The deltoid inserts at the base of the muscle and goes up towards the shoulder, so if it's going down to the elbow it may be something else. Problem is, there are so many structures in the shoulder area and nerves that can be irritated. Carpel Tunnel, which is in the wrist, can be referred to the shoulder, and even being tested by a neurologist is no guarantee. I had pain in my neck and shoulder. They said it was carpel tunnel, then they said it was thoracic outlet syndrome, then it ended up being a herniated disk in my neck, so it's sometimes really hard to tell. So don't get too frustrated, just keep doing your rehab and keep getting checked and they'll figure out what's wrong. Problem is, the body only has so many symptoms it can use, so they have to figure out which one is what as one set of symptoms could be several different things.