Degenerative Disc Disease · Naples & Fort Myers FL · Spine Surgeon
Degenerative disc disease
is not a sentence.
It is a diagnosis that needs context.
DDD is one of the most over-diagnosed and most misunderstood conditions in spine care. Almost every spine over 40 shows some degree of disc degeneration on MRI — but most people with those findings have no significant symptoms. When degeneration genuinely is the source of your pain, the right treatment depends on understanding exactly which part of the disc is causing it and what stage the degeneration has reached. Most cases do not require surgery. When surgery is appropriate, fusion is frequently not the only — or best — option.
"DDD on an MRI report is not a diagnosis of pain. A 55-year-old with multi-level disc degeneration and no symptoms should not be recommended surgery. The diagnosis is made by correlating the imaging with the clinical picture — what the patient feels, where they feel it, and what makes it better or worse."
Dr. G. Katsevman, MD · Neurosurgeon & Spine SurgeonUnderstanding the diagnosis
What degenerative disc disease
actually is — and is not
The term “degenerative disc disease” sounds alarming. In reality it describes a normal biological process that affects every spine with age — the gradual loss of disc height, hydration, and structural integrity over time. The question is not whether your discs are degenerating. They are. The question is whether that degeneration is producing the specific clinical picture that warrants intervention.
Symptoms — what discogenic pain actually feels like
Axial pain — back or neck pain at the spine itselfDiscogenic pain is typically felt at the spine rather than radiating distally. Lumbar DDD produces lower back pain; cervical DDD produces neck pain. The pain is often dull, aching, and positional — worsened by loading activities that compress the disc and relieved by lying down.
Worse with sitting and flexionSitting loads the lumbar discs more than standing. Bending forward (flexion) further increases intradiscal pressure. Patients often note pain that builds through the workday with desk work and improves with walking or position change.
Referred pain to buttocks or thighs — not radiculopathyDiscogenic pain commonly refers into the buttock and posterior thigh in a non-dermatomal pattern. This is distinct from true radiculopathy (nerve root pain), which follows a specific limb distribution and is caused by neural compression rather than disc pain itself.
Stiffness and reduced range of motionLoss of disc height and dehydration reduces the spine’s ability to tolerate sustained positions. Morning stiffness, difficulty with prolonged standing or driving, and reduced flexibility in rotation and extension are common functional complaints.
Radiculopathy when disc disease causes foraminal narrowingAs the disc collapses and loses height, the neural foramen (the opening through which nerve roots exit the spine) narrows. This can produce true radiculopathy — arm pain from cervical foraminal stenosis, leg pain from lumbar foraminal stenosis — superimposed on the axial discogenic pain.
What is happening to the disc — the biology
Nucleus pulposus dehydrationThe nucleus pulposus — the gel-like inner core of the disc — is approximately 80% water at birth. This water content provides the disc its height and its ability to distribute compressive load. With age, proteoglycan content decreases, water-binding capacity falls, and the nucleus progressively desiccates. The classic “black disc” on MRI reflects this loss of hydration signal.
Annular fissuring and disc height lossAs the nucleus desiccates, the annulus fibrosus — the outer ring of fibrous cartilage — develops radial and circumferential fissures. These fissures are a source of chemical nociception (pain from inflammatory mediators) even without herniation. Progressive annular failure leads to disc height loss and altered load distribution to the facet joints.
End-plate changes and Modic changesThe vertebral end-plates — the bony surfaces adjacent to the disc — develop reactive changes in response to disc degeneration and altered biomechanics. Modic changes visible on MRI (Type I: inflammatory edema; Type II: fatty replacement; Type III: sclerosis) correlate with symptoms in some patients and are a marker of active biological process at the disc-vertebra interface.
Reactive osteophyte formationAs disc height decreases and vertebral end-plate stress increases, the body responds with osteophyte (bone spur) formation at the disc margins. These osteophytes can narrow the spinal canal and neural foramina, converting simple DDD into stenosis or foraminal narrowing with neural compression. This is the pathway from discogenic pain to radiculopathy.
Adjacent segment disease — the cascadeWhen one level fuses — surgically or through severe spontaneous ankylosis — the adjacent levels bear increased motion and load. This accelerates degeneration at those levels. Adjacent segment disease is the most important long-term consideration in the fusion vs. disc replacement decision for DDD.
Clinical decision-making
DDD exists on a spectrum —
treatment follows the clinical picture, not the MRI grade
The Pfirrmann grade on MRI and the degree of disc height loss do not determine treatment. The patient’s symptoms, functional limitation, response to conservative care, and neurological status do. Here is how the clinical picture drives the decision.
no neurological deficit
Intermittent lower back or neck pain. Stiffness. Worse with prolonged sitting. No leg or arm pain. No weakness. MRI may show disc degeneration at one or more levels. This presentation does not require surgery. Physical therapy, core rehabilitation, activity modification, ergonomic optimization, and sometimes a short course of anti-inflammatories or a targeted injection address the symptoms effectively in the vast majority of patients.
→ Conservative care, PT, core strengtheningpossible radiculopathy
Persistent pain despite an adequate trial of physical therapy and injections. Possible radiculopathy from foraminal narrowing. Functional limitation affecting work, sleep, or quality of life. Discography may be indicated to identify the specific pain-generating level when multiple levels are involved. Surgery may be appropriate — disc replacement is evaluated as the preferred option for single or two-level disease in appropriate candidates.
→ Evaluate surgical options · disc replacement preferredsignificant neurological or functional deficit
Conservative management has failed over an adequate period. Progressive radiculopathy or myelopathy. Significant disc collapse with foraminal or canal stenosis. Segmental instability. Surgery is indicated. Disc replacement for appropriate anatomy (single or two-level, no significant instability, adequate bone quality). Minimally invasive fusion (ALIF or LLIF with percutaneous screws, custom 3D-printed aprevo® cage) when instability, deformity, or multi-level disease makes fusion the right choice.
→ Surgery indicated · fusion vs. disc replacement based on anatomyTreatment approach
How DDD is treated here —
conservative first, surgery only when genuinely indicated
The treatment of degenerative disc disease follows a clear sequence. Surgery is never the starting point. When it does become necessary, the approach is planned around the specific anatomy and goals of that patient — not a default to fusion.
The core musculature — the cylindrical system of paraspinal, abdominal, and pelvic floor muscles — is the primary mechanical support for the degenerating disc. Strengthening this system reduces compressive and shear forces at the affected level and is the most effective long-term intervention for most DDD patients. Extension-based exercises, McKenzie method, aquatic therapy, and traction are used depending on the clinical presentation. Activity is not restricted — it is redirected.
Anti-inflammatories reduce the chemical nociception from disc annular fissuring. Epidural steroid injections deliver anti-inflammatory medication directly to the symptomatic level for patients with significant radiculopathy. Medial branch blocks and radiofrequency ablation address the facet component of pain when facet arthropathy is contributing alongside disc degeneration. Injections are a bridge to rehabilitation — not a permanent solution.
The basivertebral nerve (BVN) is a sensory nerve that innervates the vertebral end-plates and the central portion of the intervertebral disc. In patients with chronic axial low back pain driven by end-plate pathology — particularly those with Modic Type I or Type II changes on MRI — the BVN is a direct pain conductor that standard epidural injections do not address.
Intracept® basivertebral nerve ablation is a minimally invasive, image-guided procedure in which radiofrequency energy is delivered via a probe introduced through the vertebral pedicle, ablating the BVN at the vertebral end-plate. It requires no incision, no implant, and no general anesthesia in most cases. The INTRACEPT randomized controlled trial demonstrated significantly greater improvement in pain and function at 3 months compared to continued non-surgical care, with durable benefit sustained at longer follow-up.
BVN ablation is most appropriate for patients with chronic axial low back pain, Modic changes at one or two levels, failure of at least 6 months of conservative management, and no significant radiculopathy or instability. It occupies a clinically important position: more targeted than epidural steroid injections, less invasive than surgery, and specifically directed at the end-plate pain generator that DDD produces. For patients who are not yet surgical candidates — or who wish to avoid surgery — BVN ablation is a meaningful option worth discussing.
For patients with single or two-level DDD who have failed conservative management and whose anatomy is appropriate, disc replacement is the preferred surgical option over fusion. The degenerated disc is removed and replaced with an artificial disc that maintains the segment’s range of motion. Adjacent levels continue to load normally. In the ProDisc-C FDA IDE trial, cervical disc replacement produced a 5-fold lower reoperation rate at 5 years vs. ACDF (2.9% vs. 14.5%). ProDisc-L lumbar disc replacement showed more than 3× less adjacent segment degeneration vs. fusion at 5-year follow-up. Dr. Katsevman is on the official surgeon locator for Simplify®, ProDisc-C®, and ProDisc-L®.
When instability, deformity, multi-level disease, or specific anatomical factors make fusion the correct operation, the approach matters. Dr. Katsevman’s preference is anterior (ALIF) or lateral (LLIF) interbody fusion with percutaneous pedicle screws — approaching the disc from the front or side rather than through the posterior musculature. Larger cages, less muscle disruption, same hardware placed through a muscle-sparing approach. Custom 3D-printed aprevo® interbody cages are planned from EOS full-spine standing imaging and built to the patient’s specific endplate geometry. Closed with tissue glue, not staples. Biologic augmentation with BMAC (bone marrow aspirate concentrate) harvested intraoperatively from the vertebral body, ASIS, or PSIS.
The critical decision for DDD surgery
Fusion vs. disc replacement —
why the distinction matters for DDD specifically
DDD is the primary indication for both fusion and disc replacement. Most patients recommended for fusion for DDD are not told that disc replacement is an alternative. Most are appropriate candidates. Here is why it matters for DDD in particular.
Frequently asked questions
What patients ask about degenerative disc disease
Is degenerative disc disease a permanent, progressive condition? +
Disc degeneration is a biological process that progresses slowly over years to decades — it cannot be reversed. However, the symptoms associated with DDD do not necessarily progress in proportion to the structural changes. Many patients have periods of significant pain followed by long periods of minimal symptoms. The natural history of DDD is not uniformly one of relentless worsening. Strong core musculature, continued activity, and appropriate interventions during flares significantly influence functional trajectory. Degeneration on imaging does not determine function — conditioning and activity do.
I was told I need fusion for DDD. Was disc replacement discussed? +
Many patients recommended for fusion for DDD are appropriate candidates for disc replacement and are never told this option exists. The reason is straightforward: disc replacement requires specific fellowship training and implant certification. A surgeon who does not perform disc replacement will not routinely discuss it. If you have single or two-level DDD without significant segmental instability, significant facet arthritis, or multi-level disease, you may be an appropriate candidate for disc replacement rather than fusion. A second opinion from a surgeon who performs both — and will recommend whichever is better for your anatomy — is the right next step before committing to a fusion.
What is the difference between DDD causing axial pain and DDD causing radiculopathy? +
Discogenic axial pain is pain generated by the disc itself — chemical nociception from annular fissuring, mechanical pain from abnormal load on a degenerated segment, or end-plate pain from Modic changes. It is felt at the spine and may refer into the buttocks or thighs in a non-specific pattern. It is not caused by nerve root compression. Radiculopathy from DDD, on the other hand, occurs when disc height loss or osteophyte formation narrows the neural foramen and compresses a nerve root. This produces arm or leg pain in a dermatomal distribution — a specific pattern corresponding to the affected nerve level. These two presentations may coexist in the same patient but have different implications for treatment. Axial discogenic pain that is not compressing a nerve root is much less likely to benefit from surgery than radiculopathy from foraminal stenosis.
How do I know if my DDD is actually causing my symptoms? +
This is the most important question in DDD management — and the one most frequently skipped in rushed evaluations. The disc on MRI may look degenerated, but the actual pain generator may be the facet joints, the SI joint, the paraspinal muscles, or a combination. The clinical examination, the specific pain pattern (axial vs. radicular, flexion-loaded vs. extension-loaded, central vs. lateral), and the response to diagnostic injections targeted at specific structures are what determine whether the disc is actually the source. Patients who are told their DDD requires surgery without this diagnostic differentiation may undergo surgery that addresses a finding on imaging rather than the actual source of their pain.
What is basivertebral nerve ablation (Intracept) and am I a candidate? +
Basivertebral nerve (BVN) ablation — commercially known as the Intracept® procedure — is a minimally invasive treatment for chronic axial low back pain caused by end-plate pathology in degenerative disc disease. The basivertebral nerve innervates the vertebral end-plates and the central disc. In patients with Modic Type I or Type II changes on MRI — which represent active inflammatory or fatty end-plate changes from chronic disc degeneration — the BVN transmits pain signals that epidural steroid injections and other standard interventions cannot block. BVN ablation uses radiofrequency energy delivered through a probe inserted via the vertebral pedicle to ablate this nerve at the end-plate. No incision, no implant. The procedure targets the specific pain pathway that the disc degeneration has activated. The ideal candidate has chronic axial low back pain (not primarily leg pain), Modic changes at one or two lumbar levels on MRI, at least 6 months of failed conservative management, and no significant radiculopathy or spinal instability. For patients in this category who have not responded to injections and are not yet at the threshold for surgery, BVN ablation offers a meaningful, evidence-supported option.
Yes — the majority of patients with symptomatic DDD are managed effectively without surgery. Physical therapy with emphasis on core stabilization and extension-based exercises, activity modification, ergonomic optimization, anti-inflammatory medications, and targeted injections (epidural steroid, medial branch block, facet injection depending on the clinical picture) address most DDD presentations. Surgery is appropriate when conservative management has been genuinely tried and failed over an adequate period, when there is progressive neurological deficit, or when functional limitation is severe enough to justify surgical risk. The threshold for recommending surgery should be based on the patient’s specific situation — not on what the MRI shows.
What is adjacent segment disease and why does it matter for my DDD treatment decision? +
Adjacent segment disease (ASD) is the accelerated degeneration of the spinal levels immediately above and below a fused segment. When a level is fused and no longer moves, the adjacent levels compensate by absorbing its motion — increasing load, accelerating degeneration, and eventually producing symptoms at those levels. ASD is the most common reason patients who underwent fusion for DDD eventually require additional surgery. For DDD patients considering surgery, ASD is a central argument for disc replacement over fusion when anatomy allows: a disc replacement that preserves motion at the treated level does not produce the mechanical cascade that drives ASD. For patients who have already had a fusion and are developing symptoms at an adjacent level, evaluation of whether that level can be treated with disc replacement rather than extension of the fusion is an important consideration.
"DDD is one of the diagnoses I am most careful with. The imaging findings are almost universal in older adults. The question is always the same: is this actually causing the patient’s pain, has conservative care been genuinely tried, and if surgery is indicated — is fusion really the only option here?"
Gennadiy (Gene) A. Katsevman, MD
Neurosurgeon & Minimally Invasive Spine Surgeon
Conservative care first — surgery only when genuinely indicated by symptoms and clinical exam
Disc replacement (Simplify®, ProDisc-C®, ProDisc-L®) for appropriate DDD candidates
Minimally invasive fusion (ALIF/LLIF) with aprevo® custom 3D-printed cages when fusion is indicated
No residents · Dr. Katsevman evaluates and performs every case himself
Fellowship-trained at Barrow Neurological Institute under Dr. Juan Uribe
Naples: 6101 Pine Ridge Road #101 · (239) 649-1662
Fort Myers: 8380 Riverwalk Park Blvd #320 · (239) 437-1121
Full background, training & publications → floridaspinesurgeon.org/about
Naples & Fort Myers, FL · Telemedicine Statewide
DDD on an MRI is not a
surgical indication. Your symptoms are.
Bring your imaging, any prior records, and a description of exactly what you feel and what makes it better or worse. Telemedicine available from anywhere in Florida. The evaluation begins with whether surgery is even necessary — not which surgery to schedule.
6101 Pine Ridge Road #101, Naples, FL 34119
Fort Myers, FL 33919
Upload imaging before your appointment