Radiofrequency ablation (RFA) can be used to treat chronic pain in various parts of the body, including the back, neck, and knees. It is most commonly used to treat chronic back pain caused by degenerative facet joint pain. Radiofrequency ablation is a medical procedure that applies heat generated radio waves to destroy targeted nervous tissue, thereby interrupting the transmission of pain signals to the brain. This provides longer lasting pain relief in the treated area.