What is radiofrequency ablation (RFA)? Radiofrequency ablation (RFA), also called radiofrequency neurotomy, uses radio waves to create a current that heats a small area of nerve tissue. The heat destroys that area of the nerve, stopping it from sending pain signals to your brain. RFA can provide lasting relief for people with chronic pain, especially in the lower back, neck and arthritic joints. Why is radiofrequency ablation (RFA) done? The goals of radiofrequency ablation a