I'm no great advocate of unproven / anecdotal medicine techniques…..BUT…
I suffered a radial nerve palsy about 8 years ago and lost the use of my right arm (slept on it funny!). I went through all the usual channels and like you, after six months of not working and beginning to believe a normal life was never going to be possible, I put my faith in an accupuncturist.
Within a week of treatment, the feeling began to return. I had two weeks of intensive treatment and by the end of week two, I had full mobility. Full strength took a lot longer to return. Treatment consisted of being stuck all over with needles (doesn't hurt), lots of deep tissue massage and drinking vile potions twice a day (I began pouring these down the sink on day two!).
It really was a last resort – the western medicine 'system' had pretty much given up on me after trying everything at their disposal.
If you really have tried all else, all I can say is that it most definitely worked for me – Dr Ming Chen Robertson, Leith, Edinburgh.
EDIT: don't just pick a practitioner at random – there are a huge number of total quacks out there – I did a LOT of research before picking Ming Chen – I had a lot of time on my hands!!