I did a quick look at your earlier posts and I wondered if you have read anything about thoracic outlet syndrome?
I know how your injury happened , but when the neck & elbows , shoulders & hand are mentioned - I usually want to mention TOS just in case.

Sometimes RSD and TOS pain & symptoms can mimic /overlap each other, or you possibly could have both conditions.

It would be good to be sure as the treatments do vary a bit.

here's the useful sticky with TOS info if you like to read about it.
post #1 has the crash course links -
http://neurotalk.psychcentral.com/thread84.html


Have you thought about a chiropractic evaluation or been checked for any spinal problems?
C spine problems can affect neck/shoulder/arms also