Ummm - I hate to tell you this, but Rhizotomy isn't permanent. Nerves grow back. And they grow back at the AVERAGE rate of one inch per month. Some grow faster, some slower. So I don't know how he said this was permanent.
I had Rhizotomy done -- it didn't work. I still have the pain like I had before. The doc used the Fluroscope so he know which nerve he was doing so there wasn't any screw up. It just plain didn't work.
But anyway -- the procedure itself was a snap. Just a little discomfort the day after. I just put some ice on it, and I was fine. But again, this isn't permanent.
Best of luck & God bless. Hugs, Lee