Procedures · Complete Guide

Disc Replacement Surgery: The Complete Guide From a Naples Neurosurgeon

Every patient who asks me about disc replacement surgery has already read that it “preserves motion” and “avoids fusion.” Almost none of them have been told who actually qualifies, what the trade-offs really are, or that the honest answer, for a meaningful share of patients, is that it isn’t the right fit at all.

That gap is what this guide is for. I want to walk you through disc replacement surgery the way I actually explain it in a consultation — what it is, how cervical and lumbar candidacy differ, what the current research supports and what it doesn’t, and where it fits alongside the fusion procedures I also perform.

I’m Dr. Mark Frenkel, a board-certified neurosurgeon and spine surgeon in Naples, Florida. I perform cervical disc replacement regularly, and I think it’s one of the more genuinely useful advances in spine surgery of the past two decades — but I also think it gets oversold online in ways that set patients up for a disappointing consultation. This guide is the corrective.

What Disc Replacement Actually Is

Disc replacement surgery removes a damaged, degenerated disc and replaces it with an artificial device designed to preserve movement at that spinal segment, rather than fusing the two vertebrae together permanently. It’s used in both the cervical (neck) and lumbar (lower back) spine, though the two applications have very different track records and candidacy requirements, which is a distinction I think gets flattened far too often in patient-facing content.

The core idea is mechanical: a healthy disc allows the vertebra above it to bend, rotate, and shift slightly relative to the vertebra below. Fusion eliminates that motion at the treated level on purpose, trading mobility for stability. An artificial disc is built to replicate at least some of that natural motion after the diseased disc is removed, which is the entire rationale for choosing it over fusion in the first place.

I want to be direct about something before we go further: disc replacement surgery is not inherently “better” than fusion. It solves a specific mechanical problem — motion preservation — and that problem only matters for a specific subset of patients and a specific set of anatomical conditions. For everyone else, it’s not a superior option; it’s simply not the applicable option.

Disc Replacement vs. Fusion: The Real Trade-Offs

The theoretical advantage of disc replacement is real and worth taking seriously: preserving motion at the treated segment may reduce the mechanical stress placed on the discs above and below it, which is the mechanism thought to drive adjacent segment disease — the gradual breakdown of neighboring discs that can follow fusion surgery over years. In appropriately selected cervical patients, current comparative data supports that theory reasonably well.

But disc replacement has its own trade-offs. It requires healthy, non-arthritic facet joints, because the artificial disc does nothing to address facet-driven pain and can even aggravate it if the joints are already degenerated. It’s not indicated for spinal instability, significant deformity, or most multilevel disease. And motion preservation isn’t necessarily permanent — heterotopic ossification, essentially new bone growth around the device, can gradually restrict motion at the treated level over years in a meaningful subset of patients, which is something I don’t think gets disclosed nearly often enough.

Cervical Disc Replacement: What I Do

In the neck, I perform anterior cervical disc arthroplasty (ACDA) regularly, and it’s the application of disc replacement I’m most confident recommending. Through an anterior approach — the same incision and corridor used for a standard ACDF — I remove the damaged disc, decompress the nerve root or spinal cord, and implant an artificial disc designed to preserve motion at that level.

Why Cervical Candidacy Is More Forgiving

The cervical spine tolerates disc replacement better than the lumbar spine for a straightforward anatomical reason: cervical facet joints carry less load and see less degenerative arthritis at the levels typically treated, and the biomechanics of the neck are simply more favorable to an artificial joint. That’s part of why cervical disc replacement has a longer, more consistent track record in the literature than its lumbar counterpart, and why I offer it far more readily.

Good candidates typically have single- or occasionally two-level disc herniation or degeneration causing arm pain, numbness, or weakness, without significant facet arthritis, instability, or prior fusion at the treated level. If that describes your imaging and your symptoms, ACDA is very often the conversation I want to have with you.

Lumbar Disc Replacement: A More Complicated Picture

Lumbar total disc replacement exists, it’s FDA-approved, and it works well for a narrow band of patients. But I want to be straightforward with you here rather than let a hub page like this imply I offer something I don’t: I don’t perform anterior lumbar total disc replacement as part of my current practice.

Here’s why the lumbar picture is so much more restrictive than the cervical one. Good candidacy generally requires painful disc degeneration that hasn’t responded to at least six months of non-surgical care, essentially healthy facet joints (facet arthritis is a significant exclusion), no meaningful instability, and normal bone density — osteopenia and osteoporosis are contraindications in most published criteria. Multilevel lumbar disc replacement also performs measurably worse than single-level, and outcomes at L5–S1 tend to lag behind L4–L5. Add in that the anterior surgical approach to the lumbar spine carries its own set of vascular and, in male patients, retrograde ejaculation risks that don’t apply to a posterior approach, and you end up with a genuinely narrow candidacy window.

For patients I see who want lumbar motion preservation and who fit a specific profile — Grade I degenerative spondylolisthesis with spinal stenosis, single level, L2–L5 — I offer the TOPS™ Posterior Arthroplasty System instead. It’s a different device and a different surgical approach than anterior lumbar disc replacement, but it serves a related goal: stabilizing the segment while preserving motion, as an FDA-approved alternative to fusion, for the specific patients it’s built for.

Am I a Candidate?

Across both the cervical and lumbar spine, I’m screening for the same core set of factors when a patient asks about disc replacement:

• Facet joint health — imaging and, in ambiguous lumbar cases, diagnostic facet injections to confirm the joints aren’t a significant pain generator
• Segmental stability — no spondylolisthesis, no abnormal motion on flexion-extension imaging
• Number of levels involved — single-level disease has meaningfully better outcomes than multilevel, particularly in the lumbar spine
• Bone quality — adequate bone density, especially for lumbar candidates
• No significant deformity — scoliosis or other structural deformity generally rules out disc replacement in favor of a fusion-based correction
• Failed conservative care — a genuine trial of physical therapy, activity modification, and, where appropriate, injections first

I’ll say the same thing here I say to patients directly: if you don’t fit that profile, disc replacement isn’t a worse version of the right surgery for you — it’s simply the wrong surgery, and a good surgeon should tell you that plainly rather than trying to make the device fit the patient.

Procedure, Recovery, and Risks

For cervical disc replacement, the surgery itself typically takes one to two hours per level. I make a small anterior incision in the neck, remove the damaged disc, decompress the affected nerve root or spinal cord, and implant the artificial disc under imaging guidance. Most patients go home the same day or after one overnight stay.

Recovery is generally faster than fusion in the early weeks, since there’s no bone graft that needs to heal solid before you can safely load the segment — most patients don’t require a rigid cervical collar the way some fusion patients do. That said, “faster” doesn’t mean immediate: most patients return to light activity within one to two weeks and to full activity, including exercise, over six to twelve weeks, depending on the physical demands of their work and lifestyle.

Risks Worth Understanding Before You Consent

Disc replacement shares several risks with any anterior cervical or lumbar surgery — bleeding, infection, injury to nearby nerves or the recurrent laryngeal nerve in the neck, and temporary swallowing difficulty after cervical procedures. It carries some device-specific risks as well: subsidence into the vertebral body, device migration, and the heterotopic ossification I mentioned earlier, which can gradually reduce motion at the treated level over time. In a small percentage of cases, a disc replacement that fails mechanically requires conversion to fusion — something I discuss upfront with every patient considering the procedure, not after the fact.

If Disc Replacement Isn’t the Right Fit

A meaningful number of patients who come in asking about disc replacement leave with a recommendation for something else, and that’s a normal, expected outcome of a real evaluation — not a failure to get the surgery they wanted. Depending on what your imaging shows, the alternatives I most often discuss include:

• ACDF — the standard fusion approach for cervical disc disease when facet arthritis, instability, or multilevel disease rules out ACDA
• ALIF and PLIF — traditional lumbar fusion approaches for degenerative disc disease with instability or facet involvement
• CemLIF™ — the rod-less, screw-less lumbar fusion technique I developed myself, for candidates who need fusion without the larger incision and hardware traditional instrumented fusion requires
• METRx minimally invasive discectomy — decompression alone, without any fusion or arthroplasty, when the disc herniation is the primary problem and the segment is otherwise stable

None of these are consolation prizes. Each one is the right first-line choice for a specific anatomical picture — the goal of a consultation is matching your actual imaging to the procedure built for it, not steering you toward whichever technique is trending online.

What the Research Actually Says

A 2025 systematic review and meta-analysis of 17 randomized controlled trials, with a minimum of four years of follow-up, found that cervical disc arthroplasty outperformed ACDF on several measures that matter clinically: significantly lower reoperation rates, reduced adjacent segment degeneration, better neurological outcomes, and meaningfully lower neck and arm pain scores at final follow-up, with greater blood loss as essentially the only trade-off identified (Journal of Orthopaedic Surgery and Research, 2025). I’d flag one honest caveat: not every comparative study in this space agrees on the direction of reoperation risk, and results vary somewhat by study design, patient selection, and how “reoperation” is defined — which is exactly why I look at a patient’s actual anatomy rather than a single headline statistic.

On the lumbar side, published patient-selection criteria consistently identify facet joint health, adequate bone density, and single-level disease as the strongest predictors of a good outcome, with satisfaction rates around 85.7% for single-level total disc replacement dropping to roughly 64.3% for two-level procedures in the literature reviewed (International Journal of Spine Surgery). That gap is a large part of why I think lumbar candidacy deserves far more scrutiny than it typically gets in patient marketing. For device-specific labeling and safety information, the FDA’s approval documentation for lumbar artificial disc devices is publicly available (FDA Summary of Safety and Effectiveness Data).

Frequently Asked Questions

The Bottom Line on Disc Replacement Surgery

Disc replacement surgery is a genuinely useful tool, not a universal upgrade over fusion. Cervical candidacy is relatively forgiving and the evidence supporting it is strong. Lumbar candidacy is narrow, and I think patients deserve to hear that clearly before they build their expectations around a procedure that may not apply to their anatomy at all.

If you want a straight answer about whether disc replacement, TOPS™, or a fusion procedure fits your specific case, call my Naples office at (239) 649-1662 or book directly at frenkelmd.com/contact. If you’re traveling from out of state or internationally, ask about our Concierge Spinal Surgery Program — we’ll coordinate the imaging review and travel so you don’t have to figure it out on your own.

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.