I really don't know much about EMGs, but isn't one of the things they're supposed to be good at sorting out is whether something is a nerve root (spinal) or branch (peripheral) issue? Is that why the hand surgeon wasn't convinced it was entirely CTS?

I am so impressed with the osteopathic manipulation I've been receiving. It's so different from any treatment I've ever had before, very effective, extremely non-threatening and side effect free. Basically by gentle pressure on the ligaments, they realign the skeleton. That would be another thing to consider. Not all DOs do OMM, but if your surgeon is a DO he might be able to refer you. Otherwise try the Cranial Academy website.