What is involved in clipping spinal nerves for relief of pain from stenosis?

Nerve heating: Spinal nerve clipping is usually done by pain management anesthesiologist by inserting a needle into the back and directing it to the nerve root channel in the spine with x-ray. The needle is then heated to destroy the nerves. It is rare for surgeons to offer open clipping of the nerves. The results vary; some patients have months of relief, some have little benefit.