Thanks again: your input is helping me understand what's going, and giving me good questions to write down to ask my physiatrist.
I just had an MRI done on my head/neck just yesterday because I was getting bad headaches, though that's resolved now, but maybe that imaging will come in handy to solve this mystery. I just really hate the sound of the nerve conduction study and emg. I understand it's probably important to do I would just prefer a miraculous recovery and avoid this whole thing!!
The taping was sort of like a triangle around the top of my arm. My physio said something was happening with my scapula and humerus, I think she said it was 'dumping', so her taping was trying to prevent that. I really liked the taping because it made my shoulder feel so much more secure, and I felt like I could use it without worrying that it would dislocate, but we discontinued it when the doctor learned that I couldn't shrug.
In the meantime I'm being careful not to do anything silly to hurt my shoulder, but I'm trying not to over-protect it either. It just feels like someone's pushing on the top of my shoulder; it's so heavy, so it is really hard to write and type, I'm using my elbow as an anchor. I'm still able to do most things (dress, wash hair, cut food etc), it just hurts.
What I don't understand is how the upper trapezius muscle atrophied without my realising. How does a muscle just all of a sudden not work like that? It's just strange because I was on such an good physio program to try to sort out my hypermobility and my shoulder was doing great. I'm glad I've been able to maintain my 30 mins of cardio and lower body exercises/stretches each day.
I will keep you updated. Thank you again!!