Can Disc Replacement Still Be Done If You Have A Herniated Disc At One Level And Degeneration At Another?

Yes, disc replacement surgery can be performed if you have a herniated disc at one spinal level and disc degeneration at another. However, multi-level artificial disc replacement is typically recommended when both segments are clearly confirmed as the source of pain, preserve motion, and maintain adequate disc height.

At Total Orthopedics and Sports Medicine, our spine surgeons perform X-rays and MRI studies to assess disc height, degree of degeneration, and nerve compression. When needed, we also use CT scans, flexion-extension imaging, and neurological exams to determine segmental stability before recommending lumbar disc replacement. To schedule a consultation, call 855‑321‑6784.

When Do Doctors Recommend Multi-Level Lumbar Disc Replacement?

Our spine surgeon,Dr. Georgiy Brusovanik, MD, recommends multi-level disc replacement when two adjacent spinal discs are confirmed sources of persistent back pain that has not improved with conservative treatment. Surgeons commonly perform this procedure when both levels preserve motion and maintain stability without significant facet joint degeneration. Besides that, they recommend surgery when bone quality can securely support implant fixation.

In addition, Dr. Georgiy Brusovanik reviews the following criteria before recommending multi-level disc replacement:

• There is no significant spinal deformity or severe spinal stenosis
• Pain significantly limits daily function or work activities
• The disc maintains adequate height to support proper implant placement.

However, before proceeding with surgery, Dr. Georgiy Brusovanik, MD, a multi-level disc replacement surgeon, assesses segmental stability using dynamic imaging and confirms adequate disc space for implant positioning. He also reviews neural compression, including signs of lumbar radiculopathy, analyzes bone quality, and identifies any instability that requires an alternative surgical approach. Contact us to book an appointment with Dr. Georgiy Brusovanik.

Is It Common to Have Both Herniation and Degeneration Together?

Yes, disc degeneration and disc herniation commonly coexist because ongoing disc wear weakens the spinal structure and increases the risk of herniation. As the disc loses hydration and internal pressure, its ability to distribute load evenly decreases. This increases stress on the outer annulus, making it more prone to tearing and herniation at one level, while adjacent or nearby levels undergo gradual disc height loss and degeneration.

In addition, when both conditions are present, symptoms may overlap and are not always clearly identifiable. For example, a herniated disc typically causes nerve-related symptoms such as radiating leg pain, numbness, or weakness due to nerve compression. In contrast, disc degeneration is more commonly associated with localized lower back pain and reduced segmental support. When both conditions occur together, this overlap can make it difficult to identify the primary source of pain based on symptoms alone.

To differentiate between these conditions and guide treatment, doctors rely on a combination of imaging and clinical assessment, such as:

MRI Findings

MRI is first used to assess disc integrity, the degree of degeneration, and the presence of nerve compression at each level. It helps determine whether symptoms are related to a herniated disc affecting nerve roots or structural changes associated with degeneration. These findings also provide the anatomical basis for identifying the pain source.

Clinical–Imaging Correlation

Then, these imaging findings are compared with the patient’s symptoms to identify the actual pain-generating level. Since not all MRI abnormalities produce symptoms, radiological changes must align with the clinical presentation. This ensures that treatment targets the symptomatic segment rather than incidental findings.

Neurological Examination

To further confirm the diagnosis, a neurological examination is performed to assess the functional impact of nerve involvement. In these cases, changes in motor strength, reflexes, or sensation indicate active nerve compression, which is more consistent with disc herniation than isolated degeneration. These findings help confirm whether nerve compression is clinically significant and responsible for the patient’s neurological symptoms.

Pain Pattern Analysis (Axial vs Radicular)

Pain characteristics are assessed to determine whether symptoms are more consistent with disc herniation or disc degeneration. Degenerative disc disease typically presents with localized axial back pain due to loss of disc support, whereas disc herniation more often causes radicular symptoms that follow a specific nerve distribution as a result of nerve compression. When both conditions occur together, analyzing symptom patterns helps identify the affected spinal level and improves diagnostic accuracy and treatment planning.

Segmental Stability

Once the symptomatic level is identified, segmental stability is assessed using dynamic imaging such as flexion-extension X-rays. This analysis helps determine whether abnormal motion is present at the affected level. The presence of instability affects treatment planning because motion-preserving procedures are typically recommended for stable segments, whereas unstable levels may need a different surgical strategy.

Diagnostic Injections

When imaging and clinical findings do not clearly identify the pain source, diagnostic injections are used to isolate the symptomatic level. In such cases, selective nerve root blocks or disc injections temporarily relieve pain at a specific segment, confirming its role in symptom generation and helping guide targeted treatment decisions.

Can a Sedentary Lifestyle Accelerate Disc Degeneration Over Time?

Yes, a sedentary lifestyle can accelerate disc degeneration by reducing normal spinal movement and increasing continuous load on the lumbar discs. Since intervertebral discs rely on regular motion for nutrient exchange and hydration, limited movement slows this process and contributes to gradual disc dehydration. At the same time, a sedentary lifestyle also increases intradiscal pressure, which further contributes to structural wear and progression of degeneration over time. These changes directly affect disc structure and function in the following ways:

Impaired Nutrient Exchange Within the Disc

Reduced spinal movement directly affects nutrient diffusion within the intervertebral disc, which relies on motion for fluid exchange. When this process slows, the disc receives less oxygen and fewer essential nutrients. Over time, this limits cellular activity and reduces the disc’s ability to maintain and repair its internal structure, which contributes to progressive degeneration.

Loss of Disc Hydration and Height

As metabolic activity declines, the disc gradually loses its ability to retain water content, which affects its internal pressure and load-bearing capacity. This leads to a reduction in disc height and alters normal force distribution across the segment. As a result, adjacent structures are exposed to increased mechanical stress, which contributes to further degeneration.

Increased Mechanical Stress on Disc Tissue

Prolonged sitting places the lumbar spine under continuous axial loading, which elevates pressure within the intervertebral disc. Because movement is limited, this load remains concentrated on specific regions rather than being evenly distributed. Over time, this uneven stress promotes microstructural damage within the disc, which contributes to progressive mechanical deterioration and accelerates degenerative changes.

Reduced Muscular Support of the Spine

Limited physical activity reduces activation of core and paraspinal muscles that contribute to spinal stability. As spinal muscle support decreases, passive structures absorb more mechanical load, increasing stress on the intervertebral discs. This shift increases strain during routine movements and contributes to ongoing stress within the spinal segment.

Progressive Structural Fatigue of the Disc

Repetitive loading without adequate movement leads to gradual structural fatigue within disc tissue. This process affects the annulus and internal disc matrix, which reduces the disc’s capacity to tolerate mechanical forces. Over time, this ongoing mechanical stress leads to microstructural damage, contributing to the progression of disc degeneration.

Does Nerve Compression Affect Multi-Level LDR Eligibility?

Yes, nerve compression directly affects your eligibility for multi-level lumbar disc replacement. Because this procedure preserves natural motion at affected disc levels, surgeons must address significant spinal stenosis or ongoing neural compression before surgery. When severe narrowing compresses the spinal canal, surgeons first decompress the nerves and then proceed with disc replacement. Progressive neurologic deficits such as motor weakness or sensory loss also indicate active neural involvement and may require modification of the surgical approach.

Is Multi-Level Disc Replacement FDA-Approved?

Yes, multi-level lumbar disc replacement is approved by the U.S. Food and Drug Administration (FDA), but only for specific artificial disc devices, including ProDisc®-L and the activL® Artificial Disc. The FDA approves these devices for use at one or two contiguous lumbar levels in patients with symptomatic degenerative disc disease. However, the FDA limits authorization to patients who meet established clinical criteria, which generally include:

• One or two adjacent levels in the lumbar spine
• Confirmed discogenic back pain after failed conservative treatment
• No significant instability or advanced facet joint degeneration

In addition, FDA approval is limited to specific spinal levels, most commonly L4–L5 or L5–S1, and must align with labeled surgical indications. Therefore, the treating spine surgeon should verify that the patient’s condition aligns with FDA-approved guidelines before proceeding with artificial disc replacement surgery.

What’s the Difference Between Multi-Level ADR VS Hybrid Surgery?

Multi-level artificial disc replacement (ADR) is a motion-preserving procedure that involves replacing two adjacent degenerated discs with artificial disc implants to preserve motion at both levels. In contrast, hybrid surgery combines disc replacement at one level with spinal fusion at another, maintaining motion at one segment while stabilizing the other.

In clinical practice, spine surgeons consider multiple-level disc replacement when both segments maintain adequate structural support and mechanical stability. However, they perform hybrid surgery when one level has instability, severe degeneration, or structural changes that require spinal fusion surgery for stabilization. In such situations, surgeons determine the surgical approach based on segmental stability, sagittal alignment, severity of degeneration, and overall lumbar biomechanics.

How Does Segmental Lordosis Affect Disc Replacement Success?

The degree of segmental lordosis achieved during surgery plays a key role in the success of disc replacement. For example, restoring proper sagittal alignment allows the implant to distribute loads evenly between the anterior and posterior spine, maintain stability, and reduce abnormal shear forces at the surgical site. In contrast, insufficient or excessive correction disrupts force transmission and increases mechanical stress within the segment.

Since implant design and placement directly affect segmental alignment, accurate positioning is essential to reestablish native lumbar curvature. If the prosthesis does not match the preoperative alignment, it may transfer stress to the facet joints and adjacent levels. Over time, this altered load distribution can contribute to adjacent segment disc degeneration.

What Are The Risks Of Multi-Level Disc Replacement Surgery?

Multi-level disc replacement surgery carries risks such as implant malposition, which can affect spinal alignment and load distribution. There is also a risk of nerve injury, which may lead to pain, numbness, or weakness. Because more than one spinal level is treated, the procedure is more complex. As a result, changes in spinal mechanics may increase the chances of adjacent segment degeneration or persistent symptoms over time.

Besides that, the following risks are also associated with multi-level disc replacement:

Implant Subsidence

Implant subsidence occurs when the artificial disc settles into the adjacent vertebral body, affecting spinal alignment and load distribution. This change can reduce implant effectiveness and alter segmental biomechanics. In multi-level procedures, subsidence at one level may affect adjacent implants, contributing to imbalance across treated segments and affecting overall spinal function.

Heterotopic Ossification

Heterotopic ossification refers to abnormal bone formation around the artificial disc after surgery, which can limit motion at the treated level. This reduces the intended benefit of disc replacement by restricting segmental mobility. As this process continues, the treated level may show reduced functional motion, which can affect the overall performance of the implant.

Facet Joint Degeneration

Facet joint degeneration may develop due to changes in load distribution after disc replacement. When mechanical forces shift across spinal segments, facet joints may experience increased stress, which contributes to joint wear and localized pain. In multi-level procedures, this effect may be more significant, particularly if alignment or motion is not evenly restored.

Infection or Wound Complications

Infection is a potential risk after any spinal surgery, including multi-level disc replacement. Longer operative time and greater surgical exposure may increase the chances of wound-related complications. These issues can affect healing, delay recovery, and in some cases require additional medical or surgical management.

Need for Revision Surgery

Revision surgery may be required if complications such as implant failure, persistent symptoms, or structural changes occur after the initial procedure. In multi-level cases, revision is more complex due to altered anatomy and multiple implants. Therefore, careful assessment is required to determine the cause of symptoms and the appropriate corrective approach.

Are There Any Activity Restrictions After a 2-Level LDR?

Yes, you should follow structured activity restrictions for the first 4–6 months after a 2-level spinal disc replacement surgery to protect healing tissue and maintain implant stability. During this recovery period, avoid repetitive bending, lifting, and twisting, as these movements increase stress on the treated segments. You should also limit prolonged sitting and avoid heavy lifting to reduce lumbar load. As healing progresses, your lumbar disc replacement surgeon gradually increases activity levels based on clinical recovery, recovery time milestones, and follow-up imaging.

During this recovery phase, your surgeon may also recommend the following precautions:

• Maintain neutral spine posture during daily activities
• Avoid sudden directional movements or abrupt trunk rotation
• Delay high-impact exercise until formal medical clearance
• Wear a prescribed brace as directed by your surgeon
• Attend scheduled follow-up appointments to monitor implant position and spinal mobility

What Is the Success Rate of Multi-Level Lumbar ADR?

Multi-level lumbar ADR has a reported success rate of approximately 70–85% in carefully selected patients, with reduced back pain and improved function. In fact, systematic reviews published in BMC journals (reporting five-year follow-up data) show significant improvement in Visual Analog Scale (VAS) and Oswestry Disability Index (ODI) scores after lumbar total disc replacement.

During the same follow-up period, studies report reoperation rates of approximately 12.1%, which are comparable to single-level procedures. However, these results depend on specific mechanical and anatomical factors before lumbar disc replacement surgery.

Not Sure If You’re Eligible for Multi-Level Disc Replacement? Book an Appointment With Dr. Georgiy Brusovanik!

A herniated disc at one level and degeneration at another can cause overlapping symptoms that are difficult to distinguish. You may experience chronic pain that limits movement and daily function. When symptoms persist despite conservative treatment, a detailed reassessment is required to identify the source of the pain.

At Total Orthopedics and Sports Medicine, Dr. Georgiy Brusovanik, MD, treats multi-level disc disease with surgical planning focused on restoring function and preserving motion. If your prior treatment has not resolved your symptoms, he provides detailed reassessment and advanced revision surgery options. Call 855-321-6784 or visit 1111 Park Ave, #1, NY 10128 to book your appointment.

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