Lumbar Disc Replacement Surgery in New York City

Dr. Zeeshan Sardar, MD, MSc, F.R.C.S.C
Director, Quality & Patient Safety (QPS) – Och Spine Hospital
Medical Director, Spine Unit – Och Spine Hospital
Co-Chief of Spinal Deformity Surgery • NewYork-Presbyterian / Columbia University
Och Spine Hospital • New York, NY

For most of the history of modern spine surgery, lumbar fusion was the only surgical option for patients with symptomatic lumbar disc disease. Fusion reliably addresses the painful, degenerated disc — but it does so by eliminating motion at the treated level entirely. The adjacent discs above and below must then absorb mechanical loads they were never designed to carry alone, accelerating their degeneration and increasing the likelihood of future problems at those levels.

Lumbar disc replacement — also called lumbar total disc replacement (TDR) or lumbar arthroplasty — offers a motion-preserving alternative. The degenerated disc is removed and replaced with an artificial implant that replicates the disc’s function, decompressing the nerve or relieving discogenic pain while preserving movement at the treated level.

Dr. Sardar completed a dedicated fellowship in artificial disc replacement at the Texas Back Institute — one of the pioneering centers for this technology in North America — and performs lumbar disc replacement as part of his motion-preserving spine surgery practice. He evaluates every patient individually and recommends the procedure — fusion or disc replacement — that best fits that patient’s anatomy, pathology, and goals.

WHAT IS LUMBAR DISC REPLACEMENT?

Lumbar disc replacement is a procedure in which a degenerated lumbar disc is surgically removed and replaced with an artificial disc implant. Like lumbar fusion, it is performed through an anterior (abdominal) approach — through the front of the body rather than the back — allowing complete removal of the disc and decompression of the affected nerve roots or relief of discogenic pain. Unlike fusion, the disc space is not packed with bone graft and locked in place. Instead, an implant is placed that allows continued motion at the treated level.

Modern lumbar disc replacement implants are FDA-approved and engineered to replicate the normal biomechanics of a healthy lumbar disc, including both motion and load transfer. They are made from materials proven in joint replacement surgery — typically cobalt-chrome alloy with a polyethylene bearing surface.

CONDITIONS TREATED

Lumbar disc replacement is used to treat symptomatic lumbar disc disease at one or two levels that has not responded to conservative management. Appropriate indications include:

Degenerative disc disease (DDD) — disc degeneration causing chronic lower back pain that is clearly disc-related (discogenic pain), confirmed by imaging and clinical evaluation
Lumbar disc herniation with radiculopathy — a herniated lumbar disc causing nerve root compression with leg pain, numbness, or weakness; disc replacement addresses both the source of pain and the nerve compression while preserving motion
Recurrent disc herniation — in selected patients who have had a prior discectomy and have re-herniated at the same level, disc replacement may offer a definitive solution while preserving motion

Not every patient with lumbar disc disease is a candidate. The selection criteria are specific, and imaging review is essential before recommending disc replacement over fusion.

LUMBAR DISC REPLACEMENT VS. FUSION

Both procedures remove the degenerated disc through an anterior approach and achieve equivalent rates of pain relief for appropriately selected patients. The fundamental difference lies in what happens to the treated level — and to the adjacent levels — over the years that follow.

Lumbar Fusion (ALIF / TLIF)

Disc removed, space filled with bone graft or cage
Treated level becomes permanently immobile
Adjacent levels absorb increased mechanical stress
Risk of adjacent segment disease over years to decades
Higher rates of reoperation at adjacent levels long-term
Appropriate for instability, deformity, spondylolisthesis, multilevel disease

Lumbar Disc Replacement (TDR)

Disc removed, replaced with motion-preserving implant
Treated level retains flexion, extension, and rotation
Normal biomechanical load distribution maintained
Reduced stress on adjacent levels
Lower rates of adjacent segment reoperation in clinical trials
Appropriate for selected patients without instability, significant facet arthritis, or deformity

WHO IS A CANDIDATE?

Lumbar disc replacement is appropriate for a carefully selected subset of patients with lumbar disc disease. Ideal candidates generally meet the following criteria:

Symptomatic disc disease at one or two levels (L3–S1) causing back pain, leg pain, or both
Failure of at least 6 weeks of appropriate conservative treatment (physical therapy, medications, injections) — except in cases of progressive neurological deficit
Preserved lumbar lordosis at the affected level — disc replacement is not appropriate in patients with kyphosis at the treated segment
No significant facet joint arthritis at the affected level — the facet joints must be functional to allow safe motion after disc replacement
No instability or spondylolisthesis at the affected level
No significant osteoporosis — adequate bone quality is required for implant fixation
Skeletally mature (growth complete)
No prior major abdominal surgery that would preclude the anterior approach (evaluated on a case-by-case basis)

Patients who do not meet these criteria — due to spondylolisthesis, significant facet arthritis, osteoporosis, multilevel degeneration, or deformity — are excellent candidates for lumbar fusion, which remains a highly effective procedure. Dr. Sardar will review your imaging carefully and give you a frank recommendation based on your specific anatomy.

THE EVIDENCE

Lumbar disc replacement is FDA-approved and supported by prospective randomized controlled trial data comparing it directly to lumbar fusion. Key findings from published clinical trials include:

Equivalent pain relief and functional outcomes — lumbar disc replacement achieves similar rates of back and leg pain improvement to lumbar fusion in appropriately selected patients
Lower adjacent segment reoperation rates — multiple trials have demonstrated statistically significant reductions in subsequent surgery at adjacent levels in patients treated with disc replacement versus fusion at 5–10 year follow-up
Preserved range of motion — functional motion is maintained at the treated level on long-term follow-up imaging in the majority of patients
Comparable safety profile — the complication rate of lumbar disc replacement is comparable to anterior lumbar fusion in trial data
High patient satisfaction — patient-reported outcomes at long-term follow-up are consistently favorable

THE PROCEDURE

Lumbar disc replacement is performed under general anesthesia through an anterior (abdominal) incision. Because the lumbar spine sits in front of the spinal canal, approaching from the front provides direct, unobstructed access to the disc space without disturbing the posterior muscles or neural structures. The steps of the procedure are as follows:

A vascular surgeon or access surgeon assists with carefully moving aside the abdominal contents and major blood vessels to expose the front of the lumbar spine
The degenerated disc is completely removed and any bone spurs compressing the nerve roots are cleared
The disc space is prepared to precise dimensions using specialized instruments to ensure optimal implant fit and positioning
The artificial disc implant is inserted and seated within the disc space; intraoperative fluoroscopy confirms correct positioning
The abdomen is closed in layers; the incision is typically small and heals well

Intraoperative neuromonitoring is used throughout the procedure. Dr. Sardar works with an experienced vascular surgery team for the anterior access, ensuring the procedure is performed safely and efficiently.

WHAT TO EXPECT: RECOVERY

Recovery from lumbar disc replacement is generally comparable to recovery from anterior lumbar fusion — and in some respects faster, since there is no fusion to protect during the healing period.

Hospital stay: Most patients go home after one to two overnight stays.
Return to light activity and desk work: Typically 2–4 weeks.
Return to physical work or exercise: Usually 6–8 weeks, guided by Dr. Sardar’s post-operative protocol.
Driving: Typically cleared within 2–4 weeks once off narcotic pain medication and comfortable.
Motion: Unlike fusion, there is no waiting period for bone to heal before motion is allowed — the implant is stable from the time of insertion.
Long-term activity: Most patients return to full activity, including exercise and sport, once healed. Specific restrictions depend on the patient’s individual circumstances and are reviewed at each post-operative visit.

FREQUENTLY ASKED QUESTIONS

How is lumbar disc replacement different from cervical disc replacement?

The concept is the same — replace a degenerated disc with a motion-preserving implant — but the surgical approach and anatomy are different. Cervical disc replacement is performed through a small incision on the front of the neck. Lumbar disc replacement is performed through an abdominal incision, with assistance from a vascular surgeon to safely move the major blood vessels and access the lumbar spine. The candidacy criteria also differ somewhat, reflecting the different biomechanics and disease patterns of the cervical and lumbar spine.

Will the artificial disc wear out?

Modern lumbar disc implants are engineered for long-term durability, using materials proven in hip and knee replacement surgery. Long-term clinical trial data do not demonstrate significant wear-related failure at 10-year follow-up in the majority of patients. The implants are designed to last decades under normal physiological loading.

Can I have an MRI after lumbar disc replacement?

Yes. All FDA-approved lumbar disc replacement implants currently in use are MRI-compatible. There may be some imaging artifact near the implant, but MRI of the lumbar spine and adjacent levels can be safely performed after surgery, which is important for monitoring the adjacent segments over time.

What if I’ve already had lumbar surgery at that level?

Prior posterior surgery (such as a microdiscectomy or laminectomy) at the same level does not automatically exclude a patient from lumbar disc replacement, but it does require careful evaluation. Significant scar tissue from prior surgery, particularly near the nerve roots or within the disc space, can affect the safety and feasibility of disc replacement. Dr. Sardar will review your prior operative records and imaging to determine whether disc replacement or fusion is the more appropriate option.

Is lumbar disc replacement covered by insurance?

Coverage varies by insurer and plan. Lumbar disc replacement is FDA-approved and is covered by many major insurers for appropriately documented indications. Dr. Sardar’s team will work with you to obtain pre-authorization and clarify your coverage before scheduling surgery.

WHY CHOOSE DR. SARDAR FOR LUMBAR DISC REPLACEMENT

Lumbar disc replacement is a technically demanding procedure that requires specific fellowship training, an experienced anterior access team, and the clinical judgment to select the right patients. It is not a procedure that should be performed by surgeons who encounter it infrequently.

Dr. Sardar completed a dedicated fellowship in artificial disc replacement at the Texas Back Institute. His fellowship training, combined with additional programs in orthopedic and neurosurgical spine surgery and complex spinal deformity, gives him a uniquely comprehensive technical foundation for both cervical and lumbar disc replacement.

He performs lumbar disc replacement as part of a broader motion-preserving spine surgery practice and is equally expert in lumbar fusion — meaning he recommends disc replacement only when it is genuinely the best option for that individual patient, never as a preference.

He operates at the Och Spine Hospital at NewYork-Presbyterian, where intraoperative neuromonitoring, advanced imaging, and an experienced vascular surgery team are available as standard for all anterior lumbar procedures.

Patients travel from across the United States and internationally to see Dr. Sardar for lumbar disc replacement. Telemedicine consultations are available for patients in NY, NJ, CT, FL, PA, MO, CA, and TX. International patients can contact NewYork-Presbyterian Global Services at +1-212-746-9100.

This page is for educational purposes only and does not constitute individualized medical advice. Please consult a qualified spine specialist to discuss your specific condition and treatment options.