You might also want to explore on our Thoracic outlet syndrome (TOS) forum-
http://neurotalk.psychcentral.com/forum24.html
Can you hold your hands up in a "stick em up" posture while opening & closing the hands for very long?
Do they get heavy, tingly , turn white?
Useful TOS sticky info thread -http://neurotalk.psychcentral.com/thread84.html