Facet rhizotomy, also commonly referred to as radiofrequency ablation, is a minimally invasive procedure that uses electrical currents to destroy nerve fibers carrying pain signals to the brain. Patients with chronic neck, arm, low back, or leg pain that stems from damaged facet joints may be considered candidates for facet rhizotomy. During the procedure, a physician uses a fluoroscope (special x-ray device) and hollow catheter to insert a radiofrequency probe into the sensory nerves located on damaged facet joints. When the probe is in place, the physician will administer radiofrequency energy to heat the tip of the probe. This heat lesion deadens the damaged nerve fibers, reducing pain. Patients may experience several weeks or months of pain relief following facet rhizotomy.