Lumbar Spine · Patient Education · Complete Guide

Alternatives to Lumbar Fusion: What I Want Every Naples Patient to Know Before Choosing Surgery

By Dr. Mark Frenkel, MD, MA, FAANS, FCNS · Board-Certified Neurosurgeon & Spine Surgeon · Naples, Florida · Updated October 2026

Nobody walks into my office excited about spinal fusion. Most patients have already researched every alternative to lumbar fusion they can find online. More than a few have decided fusion is something surgeons recommend because it pays well, not because it’s necessary.

I understand the suspicion. I also think it’s only half right.

Some of what gets marketed as an alternative to lumbar fusion is a genuinely different operation, one that leaves the spine moving. Some of it is simply a less invasive way to perform the exact same fusion. And a fair number of patients asking about alternatives don’t need fusion at all. They need a decompression, and nothing more.

I’ll draw on thousands of lumbar cases in this guide, including the technique I invented specifically to reduce hardware in the spine. I’ll walk you through the real landscape. You’ll learn which options truly avoid fusion, which ones just make fusion less invasive, and how I decide which lumbar spines genuinely need to be fused versus one that just needs room to breathe.

What “Alternatives to Lumbar Fusion” Actually Means

Search for alternatives to lumbar fusion and you’ll find everything from physical therapy to robotic surgery lumped together under one heading. That’s part of the problem. Patients arrive at my office believing “alternative” means “avoids fusion entirely,” when half of what gets marketed that way is still fusion, just performed through a different incision.

In my practice, I break the real landscape into four categories, and I think every patient researching this topic deserves to see it laid out honestly:

Conservative, non-surgical care. Physical therapy, targeted injections, activity modification, and time. This resolves the majority of back and leg pain without any surgery, fusion or otherwise.
True non-fusion surgery. Operations that relieve pressure on a nerve or joint without ever fusing a segment, such as a minimally invasive discectomy or a procedure that interrupts a pain-generating nerve.
Motion-preserving implants. Devices like the TOPS System that replace a damaged facet joint with a mechanical one instead of welding the segment solid. This is the only category that is both surgery and genuinely not fusion.
Less invasive ways to fuse. Techniques like lateral lumbar interbody fusion or my own CemLIF™ approach. These still fuse the spine permanently. But they do it through smaller incisions, with less muscle disruption, or without the rods and screws patients associate with traditional fusion.

Only the middle two categories are actual alternatives to fusion in the literal sense. The fourth category gets marketed as an “alternative” constantly, and I understand why. It genuinely is a better experience for the right patient. But calling a less invasive fusion a non-fusion alternative sets patients up to misunderstand what’s actually happening in their own spine.

Why this distinction matters more than it sounds

I’ve had patients come to me asking specifically for “the non-fusion version” of a procedure. They’d read about a technique that, on closer inspection, still permanently fuses the segment. That’s not their fault. It’s the fault of marketing copy that uses “innovative” and “non-fusion” interchangeably. I’d rather tell a patient plainly: “this still fuses your spine, and here’s why that’s still the right call.” A vague category name shouldn’t do the explaining for me.

Myth vs. Reality

Myth: “If it’s minimally invasive, it’s not fusion.”

Minimally invasive describes the incision and the muscle disruption. It says nothing about what happens to the vertebrae. Lateral lumbar interbody fusion, anterior lumbar interbody fusion, and my own CemLIF™ technique are all minimally invasive. All three also permanently fuse the treated segment. Minimally invasive fusion is still fusion. It’s simply a gentler way to get there.

Do You Actually Need Fusion? How I Decide

Before I discuss any alternative to lumbar fusion with a patient, I answer a more basic question first: does this spine actually need to be fused at all? In my experience, a meaningful share of patients referred to me for “fusion consultations” don’t need a fusion. They need a decompression.

Signs that point toward genuinely needing fusion

Instability. Measurable slippage between vertebrae on flexion-extension imaging, or a degenerative or isthmic spondylolisthesis beyond a mild grade
Deformity. Scoliosis or significant sagittal imbalance that decompression alone can’t correct
Recurrent disease at the same level. A disc that has herniated again after a prior discectomy, where the disc space itself has broken down
Multi-level degeneration causing mechanical back pain, rather than isolated leg pain from one compressed nerve
Revision cases, where a prior surgery failed and the segment needs to be stabilized

Signs that usually don’t require fusion

By contrast, a single-level disc herniation causing sciatica usually doesn’t need fusion to get better. Neither does lumbar spinal stenosis without meaningful slippage, or facet-driven back pain in an otherwise stable spine. These are the patients for whom a genuine alternative to lumbar fusion, not just a less invasive version of it, is usually the right answer.

I tell patients the same thing I’d want to hear: fusion is a tool for instability and deformity. It isn’t a default setting for “spine surgery.” In my residency under Dr. Charles Branch at Wake Forest, that distinction was drilled into every case conference. It’s shaped how I practice for over a decade since.

A Note on Imaging Alone

An MRI showing degeneration at multiple levels doesn’t automatically mean multiple levels need fusion. Degenerative changes on imaging are extremely common by middle age and often don’t correlate with where your actual pain is coming from. I spend more time correlating your exam and symptoms with the imaging than I do reading the radiology report by itself.

True Non-Fusion Alternatives: Decompression Without Fusion

These are the operations I’d point to first if a patient asks me for a genuine, literal non-fusion alternative to spinal fusion. Both relieve the actual source of pain. Neither touches the stability of the segment.

Minimally invasive lumbar discectomy (METRx)

For a herniated disc pressing on a nerve root and causing sciatica, a minimally invasive lumbar discectomy using the METRx tubular retractor system removes only the herniated disc fragment. Nothing is fused. The vertebrae are untouched; I simply free the nerve. Most of these patients go home the same day and are back to light activity within weeks.

This isn’t a fringe option. It’s one of the most extensively studied operations in spine surgery. The Spine Patient Outcomes Research Trial (SPORT) is a landmark randomized trial of surgery versus nonoperative care for lumbar disc herniation. It found disability scores improved by roughly 36 points on the Oswestry Disability Index in the surgical group. Nonoperative care improved scores by about 25 points. Physical function and pain scores showed a similar gap, and the benefit held up for eight years.¹ None of those surgical patients needed fusion. They needed their nerve freed.

Endoscopic medial branch transection

When chronic back pain comes from arthritic facet joints rather than a herniated disc, fusing the joint isn’t the only option. Endoscopic medial branch transection uses a small endoscope to locate and cut the small sensory nerves carrying pain signals away from the facet joint. The joint itself is left completely alone, which means the spine’s stability isn’t affected at all. I perform this under local anesthesia with sedation, and most patients are up and moving within days.

Decompression alone for spinal stenosis

For lumbar spinal stenosis without meaningful instability, a straightforward decompression often works on its own. I simply remove the thickened ligament and bone narrowing the spinal canal. No screws, no fusion cage. This approach resolves leg pain and improves walking tolerance for most stenosis patients. It’s precisely the question the TOPS trial set out to answer: does a stenosis patient with mild instability truly need fusion at all, or does a motion-preserving option work just as well? I cover that research next.

Not sure if your problem needs fusion at all?

If you’ve been told you need lumbar fusion and you’re not convinced, I’d encourage you to schedule a consultation. I’ll review your imaging with you directly and tell you plainly whether your spine needs to be fused, or whether a non-fusion option gets you the same result with less surgery.

Schedule A Consultation Or call (239) 649-1662

The TOPS System: A Genuine Motion-Preserving Alternative

If decompression alone isn’t enough because there’s also mild instability, the TOPS Posterior Arthroplasty System is the clearest real alternative to lumbar fusion I currently offer. It’s the one device in this entire conversation that is both a genuine implant and genuinely not a fusion.

After decompressing the nerve, instead of placing a fusion cage and locking the segment with screws, I implant a mechanical device made of titanium plates connected by an articulating core. It replaces the role of the facet joints I had to remove, while still allowing the segment to bend, rotate, and absorb load the way a healthy spine does. The segment keeps moving. That’s the entire point.

Who actually qualifies

TOPS is FDA-approved specifically for lumbar spinal stenosis with grade 1 degenerative spondylolisthesis at one level, between L2 and L5. That’s a narrower indication than patients sometimes assume. It isn’t a motion-preserving option for multi-level disease, higher-grade slippage, or true instability. Those cases still need fusion, or in select situations, the lower-hardware approach I describe in the CemLIF™ section below.

What the trial that earned FDA approval actually found

TOPS received full FDA approval in June 2023, after a Breakthrough Device designation in 2021. That approval rested on a prospective, randomized, multicenter trial. It compared TOPS directly against transforaminal lumbar interbody fusion in 249 patients.²

93% vs. 81%Patients meeting clinical success criteria (ODI), TOPS vs. fusion

5.9% vs. 8.8%Reoperation rate, TOPS vs. fusion

170 vs. 79Patients randomized to TOPS vs. fusion in the pivotal trial

Source: Prospective, randomized controlled multicenter IDE study, J Neurosurg Spine 2023.

TOPS showed statistically significant improvement over fusion on every major patient-reported outcome measure in that trial. At the same time, the treated segment retained measurable motion instead of none. I find that combination genuinely compelling. It’s exactly why I became an early adopter of the device, rather than waiting years to see how it held up.

Where I stay cautious

I’m honest with patients that TOPS is a newer device than a technique like ACDF, which has decades of track record behind it. The two-year data is strong. Fifteen-year data doesn’t exist yet, simply because the device hasn’t been on the market that long. I present TOPS as the best motion-preserving option available today for the right stenosis-plus-mild-spondylolisthesis patient. I don’t present it as having ACDF’s length of proof behind it.

When Fusion Is Still Right, and How I Make It Less Invasive

I’d be doing my patients a disservice if I pretended every lumbar problem has a non-fusion answer. Instability, deformity, multi-level mechanical pain, and most revision surgery genuinely need a fused, stable segment. The honest question for these patients isn’t whether to fuse. It’s how to fuse with the least disruption to the rest of the spine.

Lumbar interbody fusion options, by approach

I choose between a few lumbar interbody fusion options based on each patient’s anatomy, not habit:

Lateral lumbar interbody fusion (LLIF/XLIF). I approach the spine from the side through a small flank incision, avoiding the abdominal organs in front and the back muscles behind. For many degenerative and spondylolisthesis cases, this gives excellent disc height restoration with less tissue disruption than a traditional posterior approach.
Anterior lumbar interbody fusion (ALIF). Working through the abdomen with a vascular surgeon, I access the disc space directly and place a large, stable implant. The back muscles stay completely untouched, which matters for recovery and long-term back strength.
Posterior lumbar interbody fusion (PLIF). I reserve this traditional posterior approach for cases where direct visualization of the nerves from behind is genuinely necessary, such as certain revision cases. I view it as a last resort after less invasive approaches have been ruled out, not a default.

The same logic separates genuine alternatives from relabeled fusion in the neck as well. I treat cervical disc replacement as a true alternative to anterior cervical discectomy and fusion for carefully selected patients. The reason is the same one that makes TOPS qualify here: it’s a different device, not just a different incision for the same fusion.

Why the approach matters even when fusion is unavoidable

Every approach above still ends with a solidly fused segment. What changes is the collateral disruption it takes to get there: blood loss, muscle retraction, and recovery time. For a patient who genuinely needs fusion, picking the least disruptive route that still gets the job done is where a less invasive alternative to traditional open fusion earns its name honestly.

Why I’m Moving Away From Rods and Screws: CemLIF™ Explained

I’ll be direct here, because this is a topic I have strong opinions about. Pedicle screws and rods became the default hardware for lumbar fusion decades ago. In my view, the industry kept using them more out of habit than because they’re the best solution for every patient.

That’s part of why I invented CemLIF™, a cement-augmented lumbar interbody fusion technique. I want to be precise about what it is. I’ve seen it mischaracterized as a non-fusion alternative, and it isn’t one. CemLIF™ still permanently fuses the treated segment. What it eliminates is the rods and screws traditionally used to hold that segment in place while it heals.

How it actually works

Traditional fusion drills pedicle screws into the vertebrae and connects them with rods. CemLIF™ skips that step. I place an interbody spacer in the disc space and augment it with surgical cement, which sets quickly and provides immediate mechanical stability. The segment fuses from within the disc space itself, rather than being braced from the outside with metal hardware.

Why I believe this matters for patients

Less hardware, fewer hardware-related problems. Screw loosening, screw breakage, and rod-related tissue irritation are all hardware-dependent complications. Remove the hardware, and that entire category of problem goes away.
Immediate stability. Surgical cement sets in minutes. Traditional fusion relies mainly on bone graft that takes months to mature. That’s part of why several of my CemLIF™ patients have walked the same day and cleared restrictions faster than after a traditional instrumented fusion.
A simpler revision, if one is ever needed. Removing a screw-and-rod construct during revision surgery is a bigger undertaking than working around a cement-augmented interbody construct.

I developed CemLIF™ alongside my own intraoperative navigation system. I was the first surgeon to use augmented reality for real-time guidance during spine surgery. That matters enormously here: precise, image-guided placement is what makes a rod-less, screw-less construct reliably stable in the first place. I have several patents pending on techniques and instruments related to this work.

In My Patients’ Words

“I was patient #18 for Dr Frenkel’s innovative CEM-Lif procedure. The surgery to fuse L3/L4 only took 45 minutes, one night in hospital, and I walked out on my own. The recovery period was only 4 months until ‘no restrictions and playing golf’ versus a minimum 6 months my Boston doc 2nd opinion said to expect with metal rods and screws.”
Robert McVicar · Verified Google review

“After 2 courses of PT to avoid surgery for my L4-5 pain, I researched less invasive procedures that had high success rates, quick recovery and no screws/cages… Dr Frenkel’s CemLIF technique exceeded expectations. I walked out of the hospital the next day pain-free and never looked back.”
Walter Wexel · Verified Google review

What Happens If You Fuse When You Didn’t Need To

This is the research that, more than anything else, shapes how conservatively I approach the decision to fuse. Every fused segment transfers extra mechanical stress to the discs and joints above and below it. Over years, that stress adds up.

2.5%/yrReoperation rate for adjacent segment disease after lumbar fusion

22.2%Cumulative 10-year adjacent-segment reoperation rate

34% vs. 9%Adjacent-segment degeneration, fusion vs. motion-preserving arthroplasty

Sources: Sears et al., Spine J 2011; Harrop et al., Spine 2008.

A separate comparative study looked specifically at symptomatic adjacent segment disease, not just degeneration visible on imaging. It developed in 14% of fusion patients. Among patients treated with a motion-preserving arthroplasty device instead, that rate was just 1% over the same follow-up period.³ That gap is the clinical argument for every genuine non-fusion alternative in this guide. It’s also exactly why a mild spondylolisthesis patient who qualifies for TOPS, or a straightforward herniation patient who qualifies for a discectomy alone, shouldn’t be talked into a fusion they don’t need.

Why I don’t treat this as a reason to avoid fusion altogether

I want to be intellectually honest about what this data does and doesn’t say. It doesn’t mean fusion is a bad operation. For instability, deformity, and revision cases, an unstable segment left unfused tends to do far worse than a fused one, even with some downstream adjacent-level risk. What it means is that fusion should be reserved for spines that actually need the stability it provides. It shouldn’t be applied reflexively to every lumbar problem that reaches a surgeon’s office.

I keep this research in mind every time I’m deciding between the options in this guide. It’s why I spend as much time ruling fusion out as I do planning it when it’s genuinely indicated.

Questions to Ask Before Any Lumbar Spine Surgery

Whether you see me or another surgeon, these are the questions I think separate a careful recommendation from a reflexive one, especially when fusion is on the table.

Does my spine show actual instability or deformity, or is this level simply degenerated on imaging?
If I don’t have instability, is there a non-fusion option, like a discectomy, decompression, or the TOPS System, that would treat my actual symptoms?
If I need fusion, which approach gives me the least muscle disruption and fastest recovery for my specific anatomy?
Would a rod-less, screw-less technique like CemLIF™ be appropriate for my case, and why or why not?
What is your personal experience with this specific technique, and how many have you performed?
What happens to the levels above and below if we fuse this one?
What does my realistic recovery and return-to-activity timeline look like?

A surgeon willing to walk through each of these, rather than presenting fusion as the only path forward, is one worth trusting with a decision this permanent.

Traveling to Naples for a second opinion?

A significant number of my patients are seasonal residents or travel from out of state specifically to get a second opinion on whether fusion is truly necessary. My Concierge Spinal Surgery Program was built for exactly this. My team can review your imaging by telehealth and coordinate your consultation, testing, surgery, and follow-up care from start to finish.

Bring your imaging. Get a straight answer.

I’ll tell you plainly whether your lumbar spine actually needs to be fused. I’ll also tell you which genuine non-fusion alternative might fit, or which less invasive fusion technique makes the most sense for your anatomy. Traveling from out of state? My concierge team will coordinate everything.

Schedule A Consultation Inquire about concierge program

Frequently Asked Questions About Alternatives to Lumbar Fusion

What are the real alternatives to lumbar fusion?

The genuine, literal alternatives to lumbar fusion don’t permanently join your vertebrae. That includes physical therapy and injections for many cases, a minimally invasive discectomy or endoscopic medial branch transection for disc- or facet-driven pain, and the TOPS System for stenosis with mild spondylolisthesis. Techniques like lateral or anterior lumbar interbody fusion and my own CemLIF™ approach are less invasive ways to fuse. They aren’t true alternatives to fusion itself.

Is CemLIF™ a non-fusion alternative to traditional lumbar fusion?

No, and I want to be clear about that. CemLIF™ permanently fuses the treated segment, exactly as traditional fusion does. What it changes is the hardware: a cement-augmented interbody construct instead of pedicle screws and rods. I developed it to reduce hardware-related complications and speed recovery, not to avoid fusion itself.

Who is a candidate for the TOPS System instead of fusion?

TOPS is FDA-approved for a single-level lumbar spinal stenosis with grade 1 degenerative spondylolisthesis, between L2 and L5. It’s not appropriate for multi-level disease, higher-grade slippage, true instability, or deformity, all of which still require fusion or a less invasive fusion technique. I confirm candidacy with imaging and a hands-on exam before recommending it.

Can a herniated disc be treated without fusion?

In the large majority of cases, yes. A minimally invasive lumbar discectomy removes only the herniated fragment pressing on the nerve and leaves the vertebrae untouched. Fusion is typically only necessary for a herniated disc when there’s associated instability or when the same level has herniated repeatedly after a prior discectomy.

How do I know if I actually need lumbar fusion?

I look for measurable instability, spondylolisthesis beyond a mild grade, deformity, or mechanical back pain from multi-level degeneration, rather than relying on imaging alone. Plenty of degenerative findings on an MRI don’t require fusion to treat effectively. I’d encourage you to get a second opinion specifically focused on that question before agreeing to surgery.

How do I schedule a consultation with Dr. Frenkel in Naples?

Call my office at (239) 649-1662 or request an appointment at frenkelmd.com/contact/. I see patients inside Physicians Regional Medical Center at 6101 Pine Ridge Road in Naples. If you live out of state or overseas, my Concierge Spinal Surgery Program can arrange a telehealth review of your imaging and coordinate your testing, travel, and scheduling.

Key Takeaways

Not everything marketed as an alternative to lumbar fusion actually avoids fusion. Minimally invasive just describes the incision, not whether your vertebrae get permanently joined.
True non-fusion options exist and work well for the right problem. A minimally invasive discectomy treats a herniated disc; endoscopic medial branch transection treats facet pain; the TOPS System treats stenosis with mild spondylolisthesis.
CemLIF™ is my own innovation, and it’s a less invasive, lower-hardware way to fuse, not a way to avoid fusion. I correct this misconception constantly.
Fusing a segment that doesn’t need it carries a real, measurable downstream cost to the discs above and below, roughly 2.5% per year, compounding over a decade.
The right question isn’t “how do I avoid fusion.” It’s “does my spine actually need to be fused.” That answer should come from instability and deformity findings, not from imaging alone.

My Bottom Line on Alternatives to Lumbar Fusion

The honest answer to “what are the alternatives to lumbar fusion” is that it depends entirely on what’s actually wrong with your spine. If you have true instability or deformity, fusion, performed in the least invasive way your anatomy allows, is still the right tool. If you don’t, a genuine non-fusion option almost always gets you there with less surgery and less long-term risk to the rest of your spine.

If you’ve been told you need lumbar fusion and want a second opinion, I’d encourage you to schedule a consultation. The same goes if you’re simply trying to understand which of these categories actually applies to you. You can reach my Naples office at (239) 649-1662 or book directly at frenkelmd.com/contact/. If you’re traveling from out of state, ask about our Concierge Spinal Surgery Program. We handle everything.

Find out whether your spine actually needs to be fused.

Dr. Mark Frenkel · Inside Physicians Regional Medical Center · 6101 Pine Ridge Road, Naples, FL 34119

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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.

Dr. Mark Frenkel, board-certified neurosurgeon and spine surgeon in Naples, Florida

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 about Dr. Frenkel.