Spinal Conditions · Facet Joint Disease

Lumbar Facet Pain: What Naples Patients Should Know

If you’ve been told your back pain is “just arthritis,” I’d push back on that a little. When the source is your lumbar facet joints, there’s a lot more nuance to it — and a lot more that can actually be done about it — than that phrase suggests.

I see this constantly in my Naples office: a patient has lived with axial low back pain for years, been handed a vague arthritis label, and never had anyone actually test whether their lumbar facet joints are the real source. That’s a meaningful gap, because facet-mediated pain is treated completely differently than a disc problem or nerve compression.

Lumbar facet joints are a genuinely common source of chronic back pain — more common than most patients realize, and more commonly misdiagnosed than it should be. In my experience treating hundreds of these cases, getting the diagnosis right is almost the entire battle.

Here’s what these joints actually do, why they break down, how I confirm they’re the actual source of your pain, and what treatment genuinely looks like — from physical therapy all the way to the newest motion-preserving implants.

What Are the Lumbar Facet Joints, and What Do They Actually Do?

Every level of your lumbar spine has a pair of small synovial joints running down the back of the vertebrae, called facet joints, or zygapophyseal joints. Together with the disc in front, they form the three-joint complex that lets each spinal segment move — flexing, extending, and rotating — while keeping one vertebra from sliding over the next.

These joints carry real mechanical load. In a neutral standing position, the lumbar facet joints bear roughly 10 to 20% of the axial load moving through your spine. Extend your back — or lose disc height through degeneration — and that share can climb to as much as 70%. That single fact explains most of what goes wrong with these joints over time: disc degeneration doesn’t stay isolated to the disc. It shifts more of your body’s load directly onto the facet joints behind it.

Each facet joint is supplied by a small sensory nerve called the medial branch of the dorsal ramus — the exact nerve I target when I perform an endoscopic medial branch transection to treat confirmed facet pain, which I’ll come back to.

Here’s What’s Actually Happening When These Joints Break Down

Like any weight-bearing joint in your body, the lumbar facet joints can develop osteoarthritis — cartilage wears down, the joint capsule becomes lax or inflamed, and bone spurs can form. This is the most common form of facet joint disease I see, and it rarely happens in isolation from disc degeneration; the two processes feed each other in a slow mechanical cascade.

Facet joint arthritis isn’t distributed evenly across the lumbar spine. Cadaveric and imaging studies consistently show the highest prevalence and the greatest severity of facet arthrosis at L4-L5 — the same segment that takes the most rotational and load-bearing stress in daily movement, and the same level most often implicated in degenerative spondylolisthesis and facet cysts.

15–45%of chronic low back pain traced to the lumbar facet joints
10–70%share of spinal load these joints bear, standing vs. extension
L4-L5the level with the highest prevalence of facet arthrosis

Why Lumbar Facet Pain Is So Often Misdiagnosed

Here’s my honest opinion, and it’s backed by the literature: lumbar facet pain is one of the most misunderstood and mistreated diagnoses in spine care. Facet joints account for an estimated 15 to 45% of chronic low back pain, which makes this one of the more common pain generators I evaluate — and yet imaging alone frequently gets it wrong.

The uncomfortable truth is that there’s no reliable correlation between what a patient describes and what degenerative changes show up on an MRI. I’ve reviewed scans with dramatic-looking facet arthritis in patients with minimal pain, and nearly normal-looking joints in patients with significant, disabling symptoms. Relying on imaging alone to diagnose facet pain — which I still see happen constantly — leads to both over-treatment and under-treatment.

What actually confirms the diagnosis isn’t a picture. It’s a functional test: a diagnostic medial branch block. If numbing the nerve that supplies a specific facet joint meaningfully relieves your pain, that joint is confirmed as a genuine source. If it doesn’t, I look elsewhere — regardless of how the joint looks on imaging.

Symptoms: What My Patients Actually Describe

Lumbar facet pain has a fairly characteristic pattern, though it’s often confused with other causes of back pain:

  • Axial low back pain — centered in the back itself, often on one side
  • Pain that worsens with extension, twisting, or prolonged standing, and eases when sitting or leaning forward
  • Referred pain into the buttock, hip, or upper thigh — but typically not below the knee, which helps distinguish it from true nerve root compression
  • Morning stiffness that loosens up with movement
  • Tenderness directly over the affected joint on exam

What trips people up — patients and some providers alike — is that facet pain can genuinely mimic radiculopathy when referred pain travels into the leg. That overlap is exactly why a functional diagnostic test matters more than a symptom checklist.

How I Actually Diagnose Facet-Mediated Pain

I start with a history and physical exam, and I do review imaging — but I treat imaging as context, not confirmation. The actual diagnostic gold standard is a medial branch block: a small amount of local anesthetic is injected around the nerve supplying the suspected joint, under imaging guidance.

I typically require two confirmatory blocks, performed on separate occasions, before considering a joint a genuine pain generator. A block is considered positive when it produces at least 50%, and ideally 80% or more, relief of the patient’s usual pain. Requiring two positive blocks rather than one meaningfully reduces false positives and improves how well subsequent treatment actually works.

This two-step confirmation process takes more time than simply reading an MRI and making a recommendation. I think that extra time is exactly why so many patients get treated for the wrong problem before they ever reach my office.

If you’ve been living with back pain and no one has ever tested whether your lumbar facet joints are the actual source, I’d rather confirm it properly than guess.

Schedule A Consultation Or call my Naples office directly: (239) 649-1662

Treatment: From Physical Therapy to Radiofrequency Ablation

Treatment for confirmed lumbar facet pain follows a ladder, and I start conservatively for the large majority of patients:

  • Physical therapy — targeted exercise and manual therapy remain genuinely effective first-line treatment, with benefits that persist when patients stay active with a self-management program.
  • Facet joint or medial branch injections — combine diagnostic value with real, if often temporary, therapeutic relief.
  • Radiofrequency ablation (RFA) — once two diagnostic blocks confirm the joint as the pain source, RFA uses heat to disable the medial branch nerve. Published outcomes show meaningful relief for roughly 6 to 12 months, sometimes longer, in a majority of appropriately selected patients. Because the nerve eventually regenerates, RFA can be repeated when pain returns.

This is where I differ from a lot of practices: rather than repeated standard RFA every 6 to 12 months indefinitely, I frequently use endoscopic medial branch transection for appropriately selected patients — a more definitive approach to interrupting that same pain pathway under direct endoscopic visualization, rather than a blind thermal lesion. It isn’t the right fit for every patient, but I think it deserves to be part of the conversation before someone commits to years of repeat ablations.

When It Requires Surgery — TOPS™ and Fusion Options

Most lumbar facet pain never reaches the operating room. Surgery becomes relevant when facet degeneration is tied to a structural problem — spinal stenosis, degenerative spondylolisthesis, or segmental instability — rather than pain from the joint alone.

One development I think is genuinely important here: the FDA approved the TOPS™ (Total Posterior Spine) System in 2023 as the first facet replacement device for the lumbar spine. It’s indicated for patients with Grade I degenerative spondylolisthesis and moderate-to-severe spinal stenosis at one level from L3 to L5, and it stabilizes the spine after decompression without fusing it — preserving motion at that segment instead of eliminating it. I offer the TOPS™ Posterior Arthroplasty System for appropriately selected patients who fit that specific profile.

For patients outside that indication, or with more advanced instability, fusion remains the more established option. Depending on anatomy, that means posterior lumbar interbody fusion (PLIF), anterior lumbar interbody fusion (ALIF), or lateral lumbar interbody fusion (LLIF/XLIF). If you’ve also been told you have a spondylolisthesis alongside your facet disease, that combination is exactly why I walk through both a motion-preserving option and a fusion option with every eligible patient, rather than defaulting straight to hardware.

Why I Use a Different Technique

When fusion genuinely is the right call — whether for advanced facet disease, instability, or degenerative spondylolisthesis beyond what TOPS™ is indicated for — I don’t reach for the same rods-and-screws construct most practices default to. I developed CemLIF™, a rod-less, screw-less lumbar fusion technique, specifically to reduce the hardware-related complications and longer recoveries I kept seeing with traditional instrumentation.

I’m also the first surgeon to bring augmented reality navigation into spine surgery, using a system I built myself for more precise, real-time intraoperative guidance — whether I’m placing a TOPS™ implant, performing a fusion, or targeting a medial branch nerve for transection. Between seven years of neurosurgical training under Dr. Charles Branch at Wake Forest, two consecutive years as Chief Resident, and the research background I built studying spinal biomechanics, I treat every facet-related diagnosis as its own case — not a reflex prescription for injections or a reflex recommendation for fusion.

For patients traveling to Naples specifically for evaluation of chronic facet pain or a motion-preserving surgical option, my Concierge Spinal Surgery Program coordinates imaging review, scheduling, and logistics from the first consultation through recovery.

Key Takeaways

  • Lumbar facet joints bear a surprising amount of your spine’s load — up to 70% during extension — which is why they wear out alongside the disc, not independently of it.
  • Imaging alone can’t reliably diagnose facet pain; there’s no consistent correlation between what a scan shows and how much pain a patient actually has.
  • A positive diagnostic medial branch block, not an MRI finding, is what actually confirms a facet joint as your pain source.
  • Radiofrequency ablation works well for many patients, but it isn’t the only definitive option — endoscopic medial branch transection is worth discussing before committing to repeat procedures indefinitely.
  • When facet disease involves structural instability, TOPS™ and traditional fusion serve different patients — get both options explained, not just one.

Frequently Asked Questions

What causes lumbar facet joint pain?

The most common cause is osteoarthritis of the facet joint — cartilage wear that develops alongside disc degeneration, since the two structures share mechanical load. Age, prior trauma, repetitive mechanical stress, and degenerative spondylolisthesis all increase the likelihood of facet joint disease.

How do you know if your back pain is from your facet joints?

The only reliable way is a diagnostic medial branch block — a targeted injection that numbs the nerve supplying a specific joint. If it meaningfully relieves your usual pain, that joint is confirmed as a genuine source. Imaging alone can’t make this determination accurately.

Does radiofrequency ablation cure facet joint pain permanently?

No, and I’m upfront with patients about that. RFA interrupts the pain signal for roughly 6 to 12 months on average as the nerve regenerates, and it can be repeated. For patients who want a more definitive approach to the same pathway, I discuss endoscopic medial branch transection as an alternative.

What is the TOPS system and who is it for?

TOPS™ is an FDA-approved implant that replaces the facet joint after decompression surgery, preserving motion at that spinal segment instead of fusing it. It’s specifically indicated for patients age 35 to 80 with Grade I degenerative spondylolisthesis and moderate-to-severe spinal stenosis between L3 and L5.

Can lumbar facet pain be mistaken for sciatica?

Yes, and it happens more often than people expect. Facet pain can refer into the buttock and thigh, sometimes mimicking radiculopathy, though it typically doesn’t travel below the knee the way true nerve compression does. This overlap is exactly why a functional test matters more than symptom pattern alone.

When should I see a spine surgeon for lumbar facet pain?

If conservative care, injections, and radiofrequency ablation haven’t given lasting relief, or if imaging shows a structural issue like spinal stenosis or spondylolisthesis alongside your facet disease, it’s time for a surgical evaluation. I’d rather see you and confirm surgery isn’t needed than have you wait in pain.

Still not sure whether your lumbar facet joints are actually driving your pain — or what to do if they are? Let’s find out together.

Schedule A Consultation Traveling from out of town? Inquire about the Concierge Program

The Bottom Line on Lumbar Facet Pain

Lumbar facet pain is common, frequently misdiagnosed, and almost always more treatable than the vague “arthritis” label suggests. My job — the same job I do for every patient in my Naples office — is to actually confirm whether your facet joints are the source, then walk you through every option that fits, from physical therapy through radiofrequency ablation to motion-preserving implants like TOPS™ and, when genuinely necessary, fusion.

If you’re dealing with chronic low back pain and want a clear, honest read on whether your lumbar facet joints are involved, I’d encourage you to schedule a consultation at my Naples office, or call (239) 649-1662. Out-of-state and international patients can reach out through my Concierge Spinal Surgery Program to coordinate travel, imaging review, and care from a distance.

The information in this article is for educational purposes only and does not constitute medical advice. Surgical decisions are made on an individualized basis following a thorough consultation. Results may vary. Always consult a qualified physician before pursuing any surgical or medical treatment.

Sources: “Facet Joint Syndrome: From Diagnosis to Interventional Management.” Insights Imaging, PMC. Read on PMC  |  “Lumbosacral Facet Syndrome.” StatPearls, NCBI Bookshelf. Read on NCBI  |  U.S. Food and Drug Administration. Premarket Approval: TOPS System (P220002). Read on FDA.gov

About Dr. Mark Frenkel MD

Dr. Mark B. Frenkel, MD, MA, FAANS, FCNS is a board-certified neurosurgeon and spine surgeon based in Naples, Florida. He is the inventor of the CemLIF™ rod-less, screw-less lumbar fusion technique, a Castle Connolly Top Doctor (2024–2026), and a Healthgrades 99th Percentile physician. Dr. Frenkel has published extensively in peer-reviewed neurosurgical journals and is a textbook author for Elsevier and Springer Science. Learn more at frenkelmd.com/about.