Motion Preservation
Some patients with lumbar disc disease need the long-term stability of fusion but still want to maintain motion at certain levels. An advanced option is anterior lumbar fusion with disc replacement, a hybrid surgery that fuses one level while replacing an adjacent disc with an artificial implant. At Desert Spine and Pain, neurosurgeon Dr. David L. Greenwald, M.D., FAANS, FACS performs hybrid fusion/disc replacement procedures for carefully selected patients, restoring stability and relieving nerve compression while maximizing long-term mobility.
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In simple terms: One diseased disc is fused for stability, while another disc is replaced with an artificial disc to keep movement.
Scientifically: The procedure combines anterior lumbar interbody fusion (ALIF) at one level with lumbar disc arthroplasty at an adjacent level via an anterior retroperitoneal approach, balancing arthrodesis with motion preservation to reduce adjacent segment degeneration.
Multi-level degenerative disc disease (1 level requiring fusion, 1 level suitable for disc replacement)
Disc collapse with instability at one level and discogenic pain at another
Radiculopathy or nerve compression from multi-level disc disease
Patients seeking motion preservation while requiring stability
Good candidates:
Younger, active patients with 2-level lumbar disease
Healthy bone density, no severe arthritis
Single level unstable (fusion required), adjacent level degenerative but stable (disc replacement possible)
Not candidates if:
Severe multi-level instability
Significant facet arthritis at disc replacement level
Osteoporosis or poor bone quality
Prior fusion at adjacent levels
Anesthesia & positioning: You’re asleep under general anesthesia, lying on your back.
Anterior approach: A small incision in the abdomen allows access to lumbar discs.
Disc removal: Diseased discs are removed at affected levels.
Fusion level: One disc space is fused with a cage and bone graft for stability.
Replacement level: An artificial disc is placed at the adjacent level to preserve motion.
Closure: Incision closed; most patients go home in 1–2 days.
Exposure: Anterior retroperitoneal approach with vascular assistance.
ALIF level: Complete discectomy; endplate preparation; interbody cage with autograft/allograft or BMP; anterior plating or integrated fixation as needed.
Disc replacement level: Full discectomy; endplate milling; artificial disc sized and implanted under fluoroscopy.
Final construct: One fused segment plus one mobile arthroplasty segment.
Closure: Layered closure; drains rarely used.
Provides stability where needed (fusion)
Preserves motion at adjacent level (disc replacement)
Reduces risk of adjacent segment disease compared to 2-level fusion
Relieves both back and leg pain
Faster recovery compared to multi-level fusion
More complex than single-level surgery
Risks of anterior approach: vascular injury, retrograde ejaculation (men), abdominal organ injury
Implant wear/migration (rare with modern devices)
Fusion non-union possible at fused level
Long-term outcomes depend on careful patient selection
Hospital stay: 1–2 days for most patients
Weeks 1–2: Walking encouraged; light daily activity resumed
Weeks 2–6: Desk work possible; restrictions on lifting/twisting
6–12 weeks: Begin structured physical therapy; strength and flexibility restored
3–6 months: Resume most activities; fusion consolidating, artificial disc functional
6–12 months: Long-term imaging confirms fusion success and disc stability
Expert neurosurgeon: Dr. Greenwald specializes in complex hybrid lumbar surgeries
Balanced approach: Fusion where stability is required, disc replacement where mobility matters
Advanced implants: State-of-the-art cages and prostheses with proven durability
Patient-focused care: Surgery only recommended when non-surgical options fail
Because some levels require permanent stability, while others can benefit from preserved motion. This balance provides pain relief and flexibility.
For the right patient, yes. Preserving motion at one level reduces stress on other discs compared to full fusion.
Most are designed for 10–20+ years. Long-term data shows good durability.
Most patients return to normal activities within 3–6 months, with full recovery by 12 months.
We use neurosurgical precision, MIS techniques, and advanced implants, tailoring surgery to each patient’s anatomy and needs.
A Spine Specialist is standing by.
Relief is just a phone call away!
Available Around the Clock.
Phone: (602) 566-9500
SMS: (602) 566-9500
Email: [email protected]
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Conditions ,Treatments Surgery &Wellness
October 06, 2025•0 min read
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