What is a posterior lumbar fusion?
Stabilizes the lower spine from the back, often with decompression when nerves are compressed. Through a posterior approach, Dr. Merola decompresses the responsible nerves when needed and places fixation and bone graft across the planned levels to support fusion.
Conditions it treats
Am I a candidate?
It may fit lumbar instability, spondylolisthesis, deformity, fracture, recurrent stenosis, or a condition requiring decompression that would otherwise leave the segment unstable.
How the diagnosis and surgical level are confirmed
Posterior lumbar fusion is used when decompression and mechanical stabilization must be combined or when unsafe motion, deformity, a slip, fracture, or failed prior surgery requires reconstruction from the back. Evaluation separates nerve symptoms from mechanical back pain and studies stenosis, standing alignment, motion, prior scar, and bone quality. Nerves are decompressed when indicated; posterior anchors and rods control the intended levels; graft is placed across prepared fusion surfaces; and interbody support may restore height or alignment in selected plans. A limited corridor is useful only if it can complete those tasks safely. Hospital care emphasizes neurologic checks, walking, transfers, wound status, and bladder and bowel function. Professional driving adds vibration, while plumbing, firefighting, nursing, and freight work require floor-level tasks and unexpected-load control. Stable hardware does not prove union, and a technically solid fusion cannot guarantee relief of all back pain or recovery of a chronically injured nerve.
How Dr. Merola performs posterior lumbar fusion
Through a posterior approach, Dr. Merola decompresses the responsible nerves when needed and places fixation and bone graft across the planned levels to support fusion.
Recovery timeline and returning to work
Walking starts early. Desk and light duty return before repetitive bending, lifting, and trades work. Fusion progress is followed over months before unrestricted loading.
Alternatives and related procedures
Anterior fusion restores disc height from the front; minimally invasive posterior fusion may reduce tissue disruption in selected cases; decompression alone is preferred when the spine is stable.
Posterior Lumbar Fusion risks and outcomes
Risks include infection, bleeding, nerve injury, spinal fluid leak, nonunion, implant complications, adjacent-level stress, and further surgery.
Related spine procedures
Anterior Lumbar Fusion
Stabilizes one or more lumbar levels through an approach from the front of the spine.
Compare procedure →Minimally Invasive Lumbar Fusion
Stabilizes selected lumbar levels through smaller working corridors when that approach can meet the full surgical goal.
Compare procedure →Microdiscectomy
Minimally invasive decompression for selected patients with herniated-disc nerve pain.
Compare procedure →Frequently Asked Questions
How do I know whether I need a posterior lumbar fusion?
It may fit lumbar instability, spondylolisthesis, deformity, fracture, recurrent stenosis, or a condition requiring decompression that would otherwise leave the segment unstable. The decision follows a direct examination and review of imaging, symptoms, prior care, health, and functional limits.
What happens during a posterior lumbar fusion?
Through a posterior approach, Dr. Merola decompresses the responsible nerves when needed and places fixation and bone graft across the planned levels to support fusion. The exact levels and approach are individualized, and Dr. Merola performs the operation personally.
How long is recovery after a posterior lumbar fusion?
Walking starts early. Desk and light duty return before repetitive bending, lifting, and trades work. Fusion progress is followed over months before unrestricted loading. Timing still varies with the approach, levels treated, healing, neurologic findings, and job demands.
What are the alternatives to a posterior lumbar fusion?
Anterior fusion restores disc height from the front; minimally invasive posterior fusion may reduce tissue disruption in selected cases; decompression alone is preferred when the spine is stable. Non-surgical care may remain reasonable when the examination and imaging support it.
What risks should I understand before a posterior lumbar fusion?
Risks include infection, bleeding, nerve injury, spinal fluid leak, nonunion, implant complications, adjacent-level stress, and further surgery. Symptoms may improve incompletely, and additional care or surgery may be needed. No result is guaranteed.
Additional reading
Trusted sources for going deeper. These sites are independent of the practice.
- MedlinePlus.Spine Injuries and Disorders. MedlinePlus.
Independent patient information related to this procedure or the conditions it treats.
- American Academy of Orthopaedic Surgeons, OrthoInfo.Spinal Fusion. American Academy of Orthopaedic Surgeons, OrthoInfo.
Independent patient information related to this procedure or the conditions it treats.
References
- Spine Injuries and Disorders. MedlinePlus. https://medlineplus.gov/spineinjuriesanddisorders.html
- Spinal Fusion. American Academy of Orthopaedic Surgeons, OrthoInfo. https://orthoinfo.aaos.org/en/treatment/spinal-fusion/
Educational content prepared July 2026. This page is educational and does not create a doctor-patient relationship.