A longer-lasting solution that uses controlled heat to interrupt pain signals from spinal nerves, providing months of relief from chronic back and neck pain.
If a medial branch block provides good pain relief, a more semi-permanent solution known as radiofrequency ablation (RFA) may be offered. Radiofrequency Ablation is a minimally invasive procedure used to reduce pain by using heat generated from radiofrequency waves to destroy the tissue surrounding specific nerves that are transmitting pain signals to the brain. It is commonly used for treating chronic pain conditions, particularly those affecting the spine, joints, and soft tissues. RFA is considered a long-term solution to pain management (often lasting 6 to 12 months or more) and may be repeated as needed.
The concept behind radiofrequency ablation is straightforward. When a nerve is carrying pain signals from an arthritic or damaged joint to your brain, and that nerve has been confirmed as the source through diagnostic blocks, RFA uses a small amount of targeted heat to disrupt the nerve's ability to transmit those signals. The nerve is not removed or cut. Instead, the heat creates a small lesion on the nerve that temporarily prevents it from sending pain messages.
Over time, the nerve will slowly regenerate, which is why the effects of RFA are long-lasting but not permanent. Most patients enjoy six months to a year or more of significant relief before the nerve regrows and the procedure may need to be repeated. Many patients find that this cycle of relief allows them to stay active, participate in physical therapy, and maintain a much better quality of life.
Radiofrequency ablation is typically recommended for patients who have already had a successful medial branch block. You may be a candidate if:
RFA is most commonly performed on the medial branch nerves of the spine, but the technique can also be applied to other areas, including the sacroiliac joint and the knee (genicular nerves).
The procedure is performed in an outpatient setting and typically takes 30 to 60 minutes, depending on how many levels are being treated.
You will lie face down on a procedure table. The skin over the treatment area is cleaned and numbed with a local anesthetic. You will remain awake during the procedure, though mild sedation may be offered for comfort.
Using fluoroscopy (live X-ray guidance), your doctor will guide specialized radiofrequency needles to the targeted medial branch nerves. The positioning is precise and mirrors the placement used during your diagnostic blocks.
Before the ablation begins, your doctor will perform sensory and motor testing through the needle. A small electrical current is used to confirm that the needle is near the correct sensory nerve and away from any motor nerves that control muscle movement. You may feel a buzzing or tingling sensation during this step, which helps verify accurate placement.
Once placement is confirmed, the tip of the needle is heated to a controlled temperature (usually around 80 degrees Celsius) for 60 to 90 seconds per nerve. This creates a small heat lesion on the nerve that disrupts its ability to send pain signals. The process is repeated at each level being treated.
After all targeted nerves have been treated, the needles are removed and bandages are applied.
Radiofrequency ablation is covered by most insurance plans, including Medicare, when the patient has had documented successful diagnostic medial branch blocks. Prior authorization may be required. The cost depends on the number of levels treated and the facility. Our office will handle the authorization process and let you know about any expected costs before the procedure.
Recovery from radiofrequency ablation takes a bit longer than a simple nerve block, but it is still relatively quick for most patients.
For the first few days after the procedure, you may experience increased soreness or a mild burning sensation at the treatment sites. This is a normal part of the healing process as the area around the nerve recovers from the heat treatment. Some patients describe it as feeling similar to a sunburn. Over-the-counter pain relievers and ice packs can help manage this discomfort.
Avoid strenuous activity and heavy lifting for the first one to two weeks. Light walking and gentle movement are encouraged. Most patients return to work within a few days, though this depends on the physical demands of your job.
The full pain-relieving effects of RFA typically develop gradually over two to four weeks as the treated nerves stop transmitting pain signals. Some patients notice improvement within the first week, while others may take up to six weeks to experience the maximum benefit. Be patient during this period, as the results are worth the wait.
Radiofrequency ablation is one of the most effective treatments for chronic facet joint pain when patients have been properly selected through diagnostic blocks.
Most patients experience significant pain relief lasting six months to a year or longer. Some patients enjoy relief for 18 months or more. The degree of relief varies, but many patients report a 50% or greater reduction in pain, with some experiencing near-complete relief.
When the nerve eventually regenerates and pain returns, the procedure can be repeated. Many patients go through multiple cycles of RFA over the years with consistent results. Each time, the procedure follows the same process of confirming the nerve target and applying the heat treatment.
RFA works best when combined with physical therapy and an active lifestyle. The extended window of pain relief it provides gives you the opportunity to strengthen the muscles that support your spine and develop habits that help manage your condition long-term.
Here is what to keep in mind before your radiofrequency ablation:
Diagnostic blocks first: Most insurance plans require one or two successful medial branch blocks before approving RFA. If you have not yet had these diagnostic blocks, they will need to be performed first.
Medications: Inform your doctor about all medications, especially blood thinners and anti-inflammatory drugs. Some may need to be paused before the procedure.
Allergies: Report any allergies to anesthetics or contrast dye.
Transportation: You will need a driver to take you home.
Post-procedure soreness: Plan for a few days of increased soreness at the treatment sites. This is normal and does not mean the procedure was unsuccessful.
Patience: The full effects of RFA take two to four weeks to develop. Do not judge the results during the first week.
Diabetes: If steroids are used during the procedure, blood sugar may be temporarily elevated. Monitor closely.
After a successful diagnostic medial branch block confirms the facet joints as your pain source, RFA delivers long-term relief by disrupting the nerve signals responsible for the pain.
Radiofrequency ablation can also target the nerves around the sacroiliac joint, offering extended relief for patients with chronic lower back and buttock pain.
When the treated nerve regenerates and pain returns, RFA can be repeated with the same reliable results. Many patients go through multiple cycles over the years, maintaining consistent pain control and an active lifestyle.
RFA is only performed after a successful medial branch block confirms the correct nerve target. This careful, step-by-step approach ensures you get the right treatment for the right problem.
