Radiofrequency Ablation for Facet Joint Pain: What Patients Should Know

Written by Ifije Ohiorhenuan, MD, PhD — Board-Certified Spine Surgeon. Last updated 2026-06-20.

Radiofrequency ablation, often called RFA, is a minimally invasive procedure that uses heat to interrupt small pain-sensing nerves from the facet joints, most often after temporary diagnostic nerve blocks suggest those joints are a likely source of pain.

If your MRI report mentions facet arthritis, facet arthropathy, disc degeneration, or stenosis, it can be hard to know what matters. RFA may be a good fit for some people with facet-mediated pain. That means pain that is thought to come from the facet joints. But RFA is not a cure for arthritis. It also does not treat every kind of back or neck pain.

This article explains what RFA does, why test injections matter, and how to think about RFA when your MRI lists more than one finding.

What Is Radiofrequency Ablation?

Radiofrequency ablation is a procedure that uses controlled heat created by radiofrequency energy. Radiofrequency energy is a type of electrical energy that can heat a small target area.

In spine care, RFA is commonly used for pain thought to come from the facet joints. Facet joints are small joints in the back part of the spine.

The usual target is the medial branch nerves. These are small nerve branches that carry pain signals from the facet joints. They are not the spinal cord. They are not the main nerves that travel down your arms or legs.

RFA does not remove the facet joint. It does not repair cartilage. Cartilage is the smooth covering on the ends of bones in a joint. RFA also does not reverse arthritis or rebuild the spine.

Think of RFA as quieting a pain signal from a suspected joint source, not as repairing the joint itself.

The procedure is usually done with X-ray guidance. This helps the physician place the needles near the target nerves.

In my practice, I describe RFA as a pain-signal procedure, not a joint-repair procedure. That distinction helps patients have more realistic expectations.

Diagram suggestion: “Facet joint pain and medial branch RFA.” Show the back of the lumbar spine, the facet joints, the medial branch nerves, and the needle path. Add a callout: “RFA reduces pain signaling; it does not remove arthritis.”

What Are Facet Joints, and Why Can They Hurt?

The role of facet joints

Facet joints are small joints in the back of the spine. There is one pair at most spinal levels.

They help guide motion. They also add stability as you bend, twist, and stand.

Like other joints in the body, facet joints can develop arthritis. Arthritis means joint wear, inflammation, or loss of smooth joint surfaces. On an MRI report, you may see terms like:

Facet arthropathy: arthritis or wear in the facet joints.
Facet hypertrophy: enlargement or thickening of the facet joint.
Degenerative facet changes: age-related or wear-related changes in the joint.

These words can sound alarming. Most of the time, they describe wear-and-tear findings. They do not automatically mean something dangerous is happening.

What facet joint pain often feels like

Facet joint pain often feels like achy neck or low back pain.

It may worsen with:

Standing
Leaning backward
Twisting
Certain positions
Walking upright for a period of time

This kind of pain is often called axial pain. Axial pain means pain mainly in the neck, mid-back, or low back, rather than pain shooting far down an arm or leg.

Facet pain may be central or slightly off to one side. Depending on the level, it can sometimes refer into the buttock, hip, shoulder blade, or upper thigh. “Refer” means pain is felt in a nearby area even though the source may be in the spine.

These patterns can raise suspicion for facet pain. But they do not prove it.

What facet joint pain usually is not

RFA for facet pain is not mainly designed to treat leg pain from a compressed nerve.

A compressed nerve can cause radiculopathy. Radiculopathy means pain, numbness, tingling, or weakness from an irritated or pinched spinal nerve. In the low back, this is often called sciatica when pain travels down the leg.

Facet RFA is also not the usual treatment for severe spinal stenosis with neurologic symptoms. Spinal stenosis means narrowing around the spinal canal or nerve pathways.

RFA is different from an epidural steroid injection. An epidural steroid injection places anti-inflammatory medicine around irritated spinal nerves. It does not heat or ablate the medial branch nerves.

Why MRI Findings Alone Are Not Enough

MRI stands for magnetic resonance imaging. It is a scan that shows discs, nerves, joints, muscles, and other soft tissues.

MRI reports often list several findings at once. You may see:

Facet arthropathy
Facet hypertrophy
Disc degeneration
Disc bulges
Spinal stenosis
Spondylolisthesis
Foraminal narrowing

Spondylolisthesis means one spine bone has slipped forward or backward compared with the bone next to it. Foraminal narrowing means narrowing where a nerve exits the spine.

In my practice, I see “facet arthropathy” on MRI reports every day. The important question is not simply whether arthritis is present, but whether it matches the patient’s pain pattern.

Facet arthritis is common as people get older. Some people have significant-looking facet arthritis and little pain. Others have pain but also have several MRI findings, which makes the true pain source harder to identify.

An MRI can show arthritis in a facet joint, but it cannot prove by itself that the facet joint is the main reason you hurt.

What I look for on MRI is the overall pattern: facet arthritis, disc degeneration, stenosis, alignment, and whether any of these findings actually line up with the symptoms the patient describes.

This matters because RFA may be reasonable when the facet joints are the likely pain pathway. It is less likely to help if the main problem is nerve compression, hip disease, sacroiliac joint pain, or another pain source.

You can also read more about lumbar degenerative disc disease if your MRI report focuses more on disc wear than facet arthritis.

How Doctors Decide Whether RFA Makes Sense

Symptom pattern

A facet pain pattern is usually more mechanical and axial.

Mechanical pain means pain that changes with movement or position. Axial pain means the pain is mainly in the neck or back.

Pain with extension, which means leaning backward, or rotation, which means twisting, may raise suspicion for facet pain. But these exam findings are not perfect. They can overlap with other spine problems.

Facet pain is more likely when there is not a dominant nerve-compression pattern. For example, if the main complaint is shooting leg pain, numbness, or weakness from a pinched nerve, facet RFA may not be the right target.

Imaging pattern

MRI or X-ray may show facet arthropathy, joint fluid, hypertrophy, or other degenerative changes.

X-ray is a picture that shows bones and alignment. MRI shows more detail around discs, nerves, and joints.

Imaging helps show the structure of the spine. It can also show other problems, such as stenosis, disc herniation, deformity, or instability.

But imaging alone does not confirm facet pain. The imaging finding has to make sense with your symptoms and exam.

Diagnostic medial branch blocks

A diagnostic medial branch block is a temporary numbing injection around the medial branch nerves. “Diagnostic” means it is used as a test. A “block” means numbing medicine is placed near a nerve to see if pain changes.

The goal is not long-term relief from the block itself. The goal is to test whether the facet nerve pathway is likely contributing to your pain.

The diagnostic block is the “test drive.” RFA is considered only if the test drive suggests the right pain pathway has been identified.

What I look for after a medial branch block is a clear, temporary change in the pain we were trying to test — not just a vague sense that everything feels a little different.

Many clinicians or insurers require one or two diagnostic blocks before RFA. The amount of relief that counts as a “positive” block can vary by protocol. There is not one universal rule.

A strong temporary response does not guarantee RFA will work. But it helps show that the target pathway may be the right one.

What Happens During a Facet RFA Procedure?

A facet RFA is usually done as an outpatient procedure. That means you usually go home the same day.

The exact steps can vary, but the general process is:

You are positioned on the procedure table.
The skin is cleaned.
The skin and deeper tissues are numbed with local anesthetic. Local anesthetic is numbing medicine used in a small area.
X-ray guidance is used to place needles near the medial branch nerves.
The physician confirms the needle position.
More local anesthetic may be used.
Radiofrequency energy heats the target area near the small nerve branch.
The needles are removed.
You are monitored for a short time.
You usually go home the same day.

Sedation practices vary. Sedation means medicine that helps you relax or feel sleepy. Some procedures are done with little or no sedation. Others use light sedation.

Facet RFA is not spine surgery in the traditional sense. There is no large incision. No disc is removed. No bone is removed. No screws or rods are placed.

It is common to feel sore afterward. Some people feel a temporary increase in pain before improvement starts.

How Long Does RFA Relief Last?

Relief varies.

Some patients get meaningful relief for months or longer. Others get less relief than expected. Some do not improve.

The targeted medial branch nerves can regenerate over time. Regenerate means the small nerve branches can grow back or recover function. If that happens, pain may return even after a good result.

Repeat RFA may be considered in selected patients. This is more likely when the first RFA gave clear, meaningful relief and the same pain pattern returns.

If RFA does not help, it may mean the facet joints were not the main pain source. It may also mean more than one pain generator is involved.

A pain generator is the structure or pathway causing pain. In the spine, possible pain generators include facet joints, discs, nerves, sacroiliac joints, muscles, and bones.

Risks and Downsides of Radiofrequency Ablation

RFA is less invasive than surgery, but it is not risk-free.

Possible risks and downsides include:

Temporary soreness
Temporary increase in pain
Bruising
Bleeding
Infection, which is rare but possible
Numbness
Tingling
Nerve irritation
No improvement in symptoms
Pain returning over time

Nerve irritation is sometimes called neuritis. Neuritis means an irritated or inflamed nerve.

The most common “downside” is not a catastrophic complication; it is that the procedure may not help if the facet joint nerves are not the main pain source.

Procedure-related risks may be higher in certain patients. This can depend on medications, blood thinners, infection risk, anatomy, and other medical conditions.

RFA vs Epidural Steroid Injection: What’s the Difference?

RFA and epidural steroid injections are used for different suspected pain sources.

RFA

RFA targets the medial branch nerves that supply the facet joints.

It is used for suspected facet-mediated axial neck or back pain. The goal is longer-lasting reduction of facet pain signals.

RFA does not place steroid medicine around a compressed spinal nerve. It also does not open the spinal canal.

Epidural steroid injection

An epidural steroid injection places anti-inflammatory medicine into the epidural space. The epidural space is the area around the spinal nerves inside the spine canal.

Epidural steroid injections are more commonly used for radicular pain. Radicular pain means pain caused by an irritated or compressed spinal nerve. This can include sciatica or arm pain from nerve irritation.

An epidural steroid injection does not ablate nerves.

If your symptoms are mainly nerve-related, you may want to read more about epidural steroid injections for nerve-related spine pain.

RFA vs Surgery: When Are They Different Paths?

RFA is not decompression surgery.

Decompression means removing pressure from a nerve or the spinal cord. RFA does not do that.

RFA does not:

Remove a disc herniation
Open the spinal canal
Remove bone spurs
Stabilize a slip
Correct a deformity
Place screws or rods

A disc herniation means disc material has pushed out and may irritate a nerve. A deformity means an abnormal curve or alignment of the spine.

Surgery may be considered when symptoms and imaging show nerve compression, instability, progressive neurologic deficit, or another structural problem. A neurologic deficit means loss of nerve function, such as weakness, numbness, or poor coordination.

For example, surgery may be discussed for certain cases of lumbar spinal stenosis, sciatica from nerve irritation, or spondylolisthesis. In some stenosis cases, a lumbar laminectomy for stenosis may be considered. A laminectomy is a surgery that removes part of the back of a spine bone to create more room for nerves.

The finding matters most when it explains the patient’s main complaint. If the main problem is leg pain from a compressed nerve, facet RFA usually is not the procedure designed to solve that.

RFA may make more sense when the main pain pattern is mechanical axial pain and diagnostic blocks support the facet pathway.

Who May Be a Good Candidate for Facet RFA?

A patient may be considered for RFA when the story, exam, imaging, and diagnostic blocks all point in the same direction.

Features that may support RFA include:

Chronic neck or low back pain suspected to be facet-mediated
A mechanical axial pain pattern
Imaging that does not show a better explanation for the main symptoms
Meaningful temporary relief from diagnostic medial branch blocks
No active infection
No clear contraindication to the procedure
Realistic expectations

A contraindication is a reason a procedure may not be safe or appropriate.

Realistic expectations are important. RFA may reduce pain signals. It does not structurally repair the joint.

Who May Not Benefit From RFA?

RFA may not help when the main pain source is not the facet joint nerve pathway.

Patients may be less likely to benefit if the main problem is:

Shooting leg pain or arm pain from nerve compression
Progressive weakness
Signs of myelopathy
Severe stenosis symptoms where decompression is the main issue
No meaningful relief from diagnostic medial branch blocks
Pain from another source

Myelopathy means spinal cord dysfunction. It can cause balance trouble, hand clumsiness, weakness, numbness, or coordination problems.

Other pain sources can mimic facet pain. These include vertebrogenic pain, sacroiliac joint pain, hip disease, disc-related pain, stenosis, radiculopathy, and widespread pain syndromes.

Vertebrogenic pain is pain thought to come from damaged vertebral endplates. Endplates are the top and bottom surfaces of the spine bones next to the disc. A different procedure, called basivertebral nerve ablation, may be discussed for selected cases of vertebrogenic pain.

Sacroiliac joint pain comes from the joint between the spine and pelvis. You can learn more about sacroiliac joint dysfunction.

What to Ask Before Having RFA

Before having RFA, it is reasonable to ask clear questions.

What makes you think my pain is coming from the facet joints?
Do my MRI findings match my symptoms?
Do I need one or two diagnostic medial branch blocks first?
How much relief from the blocks would count as a positive test?
What symptoms is RFA expected to help?
What symptoms is RFA not expected to help?
What are the risks in my specific situation?
What happens if it does not work?
Would any of my MRI findings suggest a different treatment path?

These questions help separate the MRI words from the actual treatment target.

When to Get a Spine MRI or Case Review

If your MRI report lists several findings — such as facet arthropathy, disc degeneration, stenosis, or spondylolisthesis — it can be difficult to know which one actually matches your symptoms. SpineClarity offers a written MRI/case review from a board-certified spine surgeon. You can upload your symptoms, MRI report, and relevant records and receive a plain-language written interpretation with a suggested next-step category. This is not emergency care and does not replace an in-person physician relationship, but it can help you understand whether a treatment like RFA fits the overall picture.

Red Flags: When RFA Is Not the Next Step

Radiofrequency ablation is not an emergency treatment. If you have new or worsening leg or arm weakness, loss of bowel or bladder control, numbness in the groin or saddle area, fever with severe spine pain, unexplained weight loss, a history of cancer with new severe spine pain, major trauma, or rapidly worsening balance or hand coordination problems, seek urgent medical care rather than waiting for an outpatient procedure or online review.

For possible cauda equina syndrome, urgent evaluation is needed. Cauda equina syndrome is a rare but serious condition where nerves at the bottom of the spinal canal are compressed. Symptoms can include loss of bladder control, trouble urinating, bowel changes, and numbness in the saddle area.

Frequently Asked Questions

Is radiofrequency ablation the same as burning a nerve?

Patients often hear RFA called “burning a nerve.” That phrase is not exact, but it describes the general idea.

RFA uses controlled heat near small sensory nerve branches. Sensory nerves carry feeling and pain signals. The goal is to reduce pain signaling from the facet joints.

The target is usually the medial branch nerves, not the spinal cord or main arm or leg nerves.

Does RFA fix facet arthritis?

No. RFA does not fix facet arthritis.

It may reduce pain signals from the small nerves that supply the facet joint. But it does not reverse arthritis, rebuild cartilage, or restore the joint surface.

How do I know if my back pain is from facet joints?

MRI can raise suspicion, but it cannot prove the facet joint is the pain source by itself.

The diagnosis usually depends on the symptom pattern, physical exam, imaging correlation, and response to diagnostic medial branch blocks.

A positive block supports the facet pathway as a likely contributor. It does not guarantee that RFA will work.

Can RFA help sciatica?

Usually not if the sciatica is from a compressed or inflamed nerve root.

A nerve root is the part of a spinal nerve as it leaves the spinal canal. If that nerve is compressed, treatments may focus on reducing nerve inflammation or removing pressure from the nerve.

Depending on the cause, epidural injections or decompression-focused treatments may be considered.

How long does radiofrequency ablation last?

Relief varies.

Some people get relief for months or longer. Others get less benefit. Pain can return because the targeted small nerves can regenerate over time.

RFA is not considered a permanent cure for facet arthritis.

Can RFA be repeated?

RFA may be repeated in selected patients.

This is usually considered when the first RFA gave meaningful relief and the returning pain still fits a facet-mediated pattern.

Repeat RFA is not automatic. The symptoms and overall picture still matter.

Is RFA safer than spine surgery?

RFA is less invasive than traditional spine surgery. It uses needles instead of an incision, and you usually go home the same day.

But RFA treats a different problem.

It is not a replacement for surgery when there is significant nerve compression, instability, progressive weakness, or spinal cord symptoms.

Why do I need medial branch blocks before RFA?

Medial branch blocks help test the pain pathway.

If numbing the medial branch nerves gives clear temporary relief of the pain being tested, that supports the facet joints as a likely source.

The block is the test drive. RFA is considered only if the test suggests the right target has been found.

References

Cohen SP, Bhaskar A, Bhatia A, et al. Consensus practice guidelines on interventions for lumbar facet joint pain from a multispecialty, international working group. Regional Anesthesia & Pain Medicine. 2020;45(6):424-467. doi:10.1136/rapm-2019-101243

Hurley RW, Adams MCB, Barad M, et al. Consensus practice guidelines on interventions for cervical spine (facet) joint pain from a multispecialty international working group. Regional Anesthesia & Pain Medicine. 2022;47(1):3-59. doi:10.1136/rapm-2021-103031

Manchikanti L, Kaye AD, Soin A, et al. Comprehensive evidence-based guidelines for facet joint interventions in the management of chronic spinal pain: American Society of Interventional Pain Physicians guidelines. Pain Physician. 2020;23(3S):S1-S127.

National Institute for Health and Care Excellence. Low back pain and sciatica in over 16s: assessment and management. NICE guideline NG59. Published 2016; updated 2020.

Brinjikji W, Luetmer PH, Comstock B, et al. Systematic literature review of imaging features of spinal degeneration in asymptomatic populations. AJNR American Journal of Neuroradiology. 2015;36(4):811-816. doi:10.3174/ajnr.A4173

Kalichman L, Li L, Kim DH, et al. Facet joint osteoarthritis and low back pain in the community-based population. Spine. 2008;33(23):2560-2565. doi:10.1097/BRS.0b013e318184ef95

Maas ET, Ostelo RWJG, Niemistö L, et al. Radiofrequency denervation for chronic low back pain. Cochrane Database of Systematic Reviews. 2015;(10):CD008572. doi:10.1002/14651858.CD008572.pub2

Lord SM, Barnsley L, Wallis BJ, McDonald GJ, Bogduk N. Percutaneous radio-frequency neurotomy for chronic cervical zygapophyseal-joint pain. New England Journal of Medicine. 1996;335(23):1721-1726. doi:10.1056/NEJM199612053352302

Nath S, Nath CA, Pettersson K. Percutaneous lumbar zygapophysial joint neurotomy using radiofrequency current, in the management of chronic low back pain: a randomized double-blind trial. Spine. 2008;33(12):1291-1297. doi:10.1097/BRS.0b013e31817329f0

Smuck M, Crisostomo RA, Demirjian R, Fitch DS, Kennedy DJ, Geisser ME. Success of initial and repeated medial branch neurotomy for zygapophysial joint pain: a systematic review. PM&R. 2012;4(9):686-692. doi:10.1016/j.pmrj.2012.06.007

Patel ND, Broderick DF, Burns J, et al. ACR Appropriateness Criteria® Low Back Pain. Journal of the American College of Radiology. 2021;18(11S):S361-S379. doi:10.1016/j.jacr.2021.08.002

Davies BM, Mowforth OD, Smith EK, Kotter MRN. Degenerative cervical myelopathy. BMJ. 2018;360:k186. doi:10.1136/bmj.k186

Patel K, Upadhyayula S. Epidural Steroid Injections. StatPearls [Internet]. Treasure Island, FL: StatPearls Publishing; available from NCBI Bookshelf.