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What Is Transforaminal Lumbar Interbody Fusion?

Transforaminal lumbar interbody fusion is spinal fusion surgery that reaches a lumbar disc space from the back through a one-sided transforaminal approach. It is commonly abbreviated TLIF. The surgeon removes part of a facet joint and the damaged disc, then places an interbody cage with bone graft between adjacent vertebrae. Pedicle screws and rods are commonly added to stabilize the segment while new bone grows across the fusion.

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What Is Transforaminal Lumbar Interbody Fusion?

Transforaminal lumbar interbody fusion is spinal fusion surgery that reaches a lumbar disc space from the back through a one-sided transforaminal approach. It is commonly abbreviated TLIF. The surgeon removes part of a facet joint and the damaged disc, then places an interbody cage with bone graft between adjacent vertebrae. Pedicle screws and rods are commonly added to stabilize the segment while new bone grows across the fusion.

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Why Is Transforaminal Lumbar Interbody Fusion Performed?

TLIF is used for selected patients with lumbar instability, spondylolisthesis, degenerative disc disease, recurrent disc herniation, spinal stenosis, or deformity that requires both decompression and fusion. The procedure can relieve pressure on nerve roots while restoring disc height and stabilizing a painful spinal segment. Surgeons consider symptoms, imaging, spinal alignment, nerve compression, previous surgery, bone quality, and response to nonsurgical treatment before recommending fusion. Not every source of low back pain benefits from TLIF, so a clear structural indication is needed.

How Is Transforaminal Lumbar Interbody Fusion Performed?

The surgeon approaches the lumbar spine from the back and removes part of the facet joint to create a corridor into the disc space while protecting the exiting and traversing nerve roots. The damaged disc material is removed, and the vertebral endplates are prepared for fusion. Bone graft and an interbody cage are inserted to restore height and provide a scaffold for new bone growth. Pedicle screws and rods are then positioned to stabilize the vertebrae while the fusion matures.

What Is Recovery Like After Transforaminal Lumbar Interbody Fusion?

Patients usually begin walking soon after surgery as pain and neurologic status allow. Bending, twisting, heavy lifting, and high-impact activity are restricted while the fusion begins to heal. Physical therapy and gradual activity progression focus on walking, mobility, core strength, posture, and safe return to daily activities. Bone fusion develops over several months, so follow-up imaging is used to monitor implant position, alignment, and evidence of solid fusion.

What Are the Risks and Complications?

Possible complications include infection, bleeding, blood clots, dural tear, nerve-root injury, persistent pain, and weakness or numbness. Cage migration, subsidence, pedicle-screw malposition, or hardware failure can affect the stability of the construct. Failure of the vertebrae to fuse, called pseudarthrosis, can cause ongoing pain and can require revision surgery. Adjacent spinal segments can also develop accelerated degeneration over time after a successful fusion.

Frequently Asked Questions About Transforaminal Lumbar Interbody Fusion

What does TLIF stand for?

TLIF stands for transforaminal lumbar interbody fusion, a procedure that reaches the lumbar disc space through a posterior transforaminal corridor.

Does TLIF remove a spinal disc?

Yes. The damaged disc at the fusion level is removed, and an interbody cage with bone graft is placed into the disc space.

Is TLIF always performed as open surgery?

No. TLIF can be performed through a traditional open approach or with minimally invasive techniques using tubular retractors and smaller incisions.

How long does fusion take after TLIF?

Bone healing continues for several months and can take longer in some patients. Follow-up imaging helps determine whether solid fusion is developing.

References

TLIF (Transforaminal Lumbar Interbody Fusion). Cleveland Clinic. https://my.clevelandclinic.org/health/procedures/transforaminal-lumbar-interbody-fusion-tlif. Date Accessed September 11, 2026.

Lumbar interbody fusion: techniques, indications and comparison of interbody fusion options including PLIF, TLIF, MI-TLIF, OLIF/ATP, LLIF and ALIF. PubMed. https://pubmed.ncbi.nlm.nih.gov/27683674/. Date Accessed September 11, 2026.

Minimally invasive transforaminal lumbar interbody fusion (MI-TLIF): A review of indications, technique, results and complications. PubMed. https://pubmed.ncbi.nlm.nih.gov/31695275/. Date Accessed September 11, 2026.

State of the union: a review of lumbar fusion indications and techniques for degenerative spine disease. PubMed. https://pubmed.ncbi.nlm.nih.gov/31261133/. Date Accessed September 11, 2026.

Static versus expandable transforaminal lumbar interbody fusion cages: a meta-analysis of complications, clinical, and radiographic outcomes. PubMed. https://pubmed.ncbi.nlm.nih.gov/40623528/. Date Accessed September 11, 2026.