Lumbar Disc Replacement
Motion-preserving alternative to lumbar fusion for single-level degenerative disc disease
Lumbar total disc replacement (lumbar arthroplasty) is a surgical procedure in which a degenerated lumbar intervertebral disc is removed and replaced with an artificial disc implant designed to preserve spinal motion at the treated level. It was developed as an alternative to lumbar fusion for patients with discogenic low back pain, with the goal of maintaining normal segmental motion and potentially reducing the risk of adjacent segment degeneration — a long-term concern with spinal fusion. The procedure requires an anterior (abdominal) approach, typically performed with a vascular or access surgeon to mobilize the major blood vessels. FDA-approved lumbar disc replacement devices include the Charité (DePuy), ProDisc-L (Centinel Spine), and Kineflex-L (SpinalMotion).
Who Is a Candidate?
- Single-level lumbar degenerative disc disease at L3–S1 (most commonly L4–5 or L5–S1) with discogenic low back pain ± mild radiculopathy
- Failed conservative care over 6+ months including physical therapy, medications, and injections
- No significant facet joint arthritis at the affected level (facet disease is a relative contraindication)
- No significant instability, deformity (scoliosis), or spondylolisthesis >Grade I
- Adequate bone density (osteoporosis is a contraindication — implant may subside into weakened vertebral endplates)
- No prior posterior spine surgery at the affected level
- Single-level disease only — multilevel disc replacement is not well supported by evidence and not FDA-approved for routine use
What to Expect
1Before Surgery
Preoperative evaluation includes MRI, CT scan for bone quality assessment, standing X-rays (including flexion-extension views to assess instability), and clinical correlation. Discography may be performed in select cases to confirm the symptomatic level. A vascular or general surgeon is typically involved for the anterior access. Patients are asked to stop blood thinners and NSAIDs before surgery.
2The Procedure
Under general anesthesia, the patient is positioned supine (on their back). The access surgeon makes an anterior retroperitoneal incision and carefully mobilizes the major blood vessels (aorta, iliac vessels) to expose the front of the spine. The spine surgeon removes the damaged disc (discectomy) and prepares the vertebral endplates. The appropriately sized artificial disc implant is placed and impacted into position under fluoroscopic guidance. Total operative time is typically 2–3 hours. Intraoperative fluoroscopy confirms implant sizing and positioning.
3Recovery
Hospital stay is typically 2–3 days. Patients walk the day after surgery. Light activity and short walks resume within 1–2 weeks. Return to desk work typically occurs at 4–6 weeks. Return to physical labor or sport at 3–6 months. Unlike fusion, there is no bone healing process — the implant provides immediate stability, and motion is preserved from the time of surgery.
Typical Outcomes
FDA investigational device exemption (IDE) trials for the Charité and ProDisc-L devices showed equivalent or superior outcomes compared to anterior lumbar interbody fusion (ALIF) at 2-year follow-up for pain, function (ODI), and patient satisfaction. Motion preservation at the treated level is confirmed on X-ray at 2–5 years in the majority of patients, with mean segmental motion of 5–8 degrees maintained. Adjacent segment disease rates may be lower than fusion, but long-term (10+ year) data are limited. Overall revision rate is approximately 3–5% at 5 years.
Risks & Considerations
- Access-related vascular injury: injury to the aorta, iliac artery, or iliac vein during anterior approach; incidence ~1–3%; can be serious and require vascular repair
- Retrograde ejaculation in males: disruption of the superior hypogastric nerve plexus during anterior access; incidence ~1–5%; typically resolves over weeks to months but can be permanent
- Bowel injury: rare, <1%
- Device-related complications: implant subsidence, migration, wear debris, mechanical failure; revision rate ~3–5% at 5 years
- Adjacent segment disease: may occur at lower rates than lumbar fusion (long-term data limited), but not eliminated
- Same neurological risks as anterior lumbar surgery: nerve root injury, cauda equina syndrome
- Hardware failure requiring revision or conversion to fusion
- Wound infection, deep vein thrombosis, pulmonary embolism (standard surgical risks)
Frequently Asked Questions
Who is a candidate for lumbar disc replacement?
The ideal candidate has single-level lumbar disc disease (most commonly L4–5 or L5–S1) causing predominantly axial (low back) pain, has failed at least 6 months of conservative care, has no significant facet arthritis or instability at the affected level, has normal bone density, and has not had prior posterior spine surgery at that level. Patients with multilevel disease, significant deformity, severe osteoporosis, or prior surgery at the same level are typically better served by lumbar fusion.
Is lumbar disc replacement better than fusion?
For carefully selected single-level candidates, lumbar disc replacement and anterior lumbar fusion produce equivalent pain and function outcomes at 2 years in FDA IDE trials. The potential advantages of disc replacement are preserved motion at the operated level and a theoretically lower rate of adjacent segment disease over time — but long-term data beyond 5 years are limited. Fusion is a more versatile procedure that works for multilevel disease, instability, deformity, and revision cases. Neither is universally "better" — the right choice depends on the individual patient's anatomy and clinical profile.
How long does a lumbar disc implant last?
Current-generation lumbar disc implants are designed for long-term durability. Laboratory wear testing supports longevity exceeding 40 million cycles (equivalent to many decades of use). Clinical registry data at 5–10 years show acceptable mechanical performance with low device failure rates (~3–5% at 5 years). Very long-term (20+ year) clinical data in large populations are not yet available, as the procedure has only been widely performed since the mid-2000s.
Can you have an MRI after lumbar disc replacement?
It depends on the implant. Most modern FDA-approved lumbar disc replacement devices are made of cobalt-chromium alloy with a polyethylene core — these are MRI conditional at 1.5T and 3T under specific conditions. However, metal artifact from the implant significantly limits the quality of lumbar MRI at the operated level. CT myelography is often preferable for evaluating neural compression near a lumbar disc replacement. Always inform the MRI technologist about your implant and bring your device identification card.
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Medical disclaimer: This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with any questions you may have regarding a medical condition or surgical procedure. Last reviewed April 2026. CPT: 22857.