Lumbar Fusion Surgery Guide

What Is Lumbar Fusion?

Lumbar spinal fusion permanently connects two or more vertebrae in the lower back (lumbar spine) to eliminate painful motion at a damaged spinal segment. The surgeon places bone graft material between the vertebrae and uses metal screws and rods to hold everything in place while the bones fuse into solid bone over several months. It is one of the most common spine surgeries, with over 200,000 lumbar fusions performed annually in the US.

Types of Lumbar Fusion

Posterior Lumbar Fusion (PLF): Approach from the back. Most common. Bone graft placed along the sides of the vertebrae.

PLIF/TLIF: Posterior or transforaminal interbody fusion. A cage with bone graft is placed in the disc space from the back approach. Provides structural support.

ALIF: Anterior approach through the abdomen. Better disc space restoration. Often combined with posterior fixation.

Minimally Invasive Fusion: Uses tubular retractors and specialized instruments through small incisions. Less muscle damage, faster recovery, less blood loss.

Cost

Lumbar fusion costs $30,000 to $90,000 before insurance depending on the number of levels fused, approach, and facility. Single-level fusion is less expensive than multi-level. Most insurance covers fusion when conservative treatment has failed.

Recovery

Week 1-2: Walking encouraged. Pain management. No bending, lifting, or twisting (BLT restrictions).
Weeks 2-6: Gradual increase in walking. Light daily activities. Driving may resume at 4-6 weeks.
Months 2-3: Physical therapy begins. Return to desk work.
Months 3-6: Progressive strengthening. Most activities resume.
Months 6-12: Bone fusion consolidating. Full recovery.

Frequently Asked Questions