Radiofrequency (Nerve) Ablations (RFA)

How does a Radiofrequency Ablation work?

This minimally invasive procedure is performed by our specialist using x-ray guidance (fluoroscopy) to direct the RFA needle toward the medial or lateral branch nerves. Once the needle is placed accurately, an active electrode is inserted through the needle and a small amount of electrical current is carefully passed next to the target nerve and a safe distance from other nerves. This current may briefly recreate the painful symptoms that the patient usually experiences.

What to expect during an RFA procedure

Your pain specialist will have you lay on your stomach, the skin over the treatment area (neck, mid-back, or low back) is well cleansed to minimize the risk of infection. The specialist numbs a small area of skin by injecting a numbing medicine (anesthetic) in the region of the RFA injection. After confirming the nerve that is your pain source, your specialist will create a heat lesion on the nerve using the preferred method (conventional, pulsed, or water-cooled radiofrequency) of ablation. This process may be repeated for additional nerves. The entire procedure takes 30-90 minutes.

What to expect after an RFA procedure

Immediately after the RFA, the patient is shifted to a recovery room for 15 minutes to an hour (if sedation was used) where his/her vital signs are continuously monitored. Depending on the area treated, a superficial burning pain with hypersensitivity, like a sunburn feeling may be experienced. Sometimes a slight numbness of the skin over the same area may also be experienced. Pain relief after RFA is typically experienced 1 to 3 weeks after the procedure. It is advised to rest for several days before returning to normal activities. Patients may engage in regular activities but should let pain levels be their guide for the first few days.