I just had my facet joint rhizotomy done last Wednesday (11-4-09), following a series of injections that did bring wonderful pain relief, but always with side effects from steroids and not for long enough to make it worth the procedure every few months (causes me to miss large quantities of work).

My pain specialist had no qualms doing the procedure in the thoracic once he was comfortable the correct nerves were identified. I'm not sure yet how well it will work, as I just had it done, but so far my spine feels much better. The pain in my back is muscle pain from procedure vs the pain from the spine previous to having it done.

Good luck, I sincerely hope you find a doctor who can help you with this.