What's the difference between TLIF and PLIF?

TLIF (Transforaminal Lumbar Interbody Fusion) approaches from the side, while PLIF (Posterior Lumbar Interbody Fusion) approaches from behind. TLIF typically requires less nerve retraction and is Dr. Greenberg's preferred approach when appropriate.

How long does it take for the bones to fuse?

Solid fusion typically occurs within 6-12 months. During this time, the bone graft grows and creates a permanent bridge between vertebrae. X-rays and CT scans monitor fusion progress.

Will I lose flexibility after lumbar fusion?

You'll lose motion at the fused levels, but adjacent levels often compensate. Most patients can return to normal activities including golf, tennis, and hiking after full recovery.

Can robotic assistance be used for lumbar fusion?

Yes, Dr. Greenberg uses robotic navigation for precise screw placement when appropriate. This technology enhances accuracy and safety while potentially reducing tissue damage.

What happens if the fusion doesn't heal properly?

Pseudarthrosis (failed fusion) occurs in less than 5% of cases with modern techniques. Risk factors include smoking, diabetes, and certain medications. Revision surgery may be needed if symptomatic.

Lumbar Fusion (TLIF/PLIF) | Stabilization with MIS Options

Lumbar Fusion (TLIF/PLIF)

Performed byMarc Greenberg, MD—Fellowship-trained spine surgeon·Mayo Clinic·Evidence-based spine careView credentials

Medically reviewedbyMarc Greenberg, MDFellowship-trained orthopedic spine surgeonLast reviewed: June 2026

Quick Answer

Lumbar fusion (TLIF/PLIF) permanently stabilizes the lumbar spine by placing bone graft between vertebrae to promote fusion, relieving pain from instability, spondylolisthesis, or severe degeneration. Screws and rods provide immediate stability while bone fusion heals over 3–6 months.

How Lumbar Fusion Works

Disc Removal

Remove damaged disc material completely

Cage Placement

Insert interbody cage filled with bone graft

Instrumentation

Place screws and rods for immediate stability

Bone Healing

Graft grows to create permanent fusion

TLIF vs PLIF Approach

TLIF:

Side approach, less nerve retraction, single cage

PLIF:

Posterior approach, bilateral cages, more disc removal

Alternative Treatments

Conservative Options

• Physical therapy and core strengthening
• Epidural steroid injections
• Facet joint injections
• Activity modification and bracing

Surgical Alternatives

• Decompression alone (if no instability)
• Disc replacement (investigational in lumbar spine)
• Minimally invasive approaches
• Staged procedures for complex cases

Evidence Snapshot

Research-Backed Benefits

Minimally invasive TLIF outcomes show reduced blood loss and shorter LOS
Fusion healing may be comparable in selected patients, with tissue disruption depending on technique and anatomy
Complication risk depends on patient factors, procedure details, and surgical setting
Return-to-work timing depends on job demands, procedure details, and recovery progress

Clinical Evidence

Blood loss and LOS vs open studies favor minimally invasive approach
Fusion healing depends on bone quality, nicotine status, medical factors, technique, and follow-up recovery
Patient satisfaction scores consistently high in follow-up studies

View Our Research →

Evidence & Research — FAQs

Does MIS TLIF actually reduce complications?

Studies report less blood loss and hospital stay planning with comparable fusion rates when performed by experienced surgeons. Research demonstrates reduced infection rates, less muscle damage, and recovery compared to open techniques.

How do fusion rates compare to open surgery?

Long-term fusion healing depends on bone quality, nicotine status, medical factors, technique, graft placement, and follow-up recovery. Minimally invasive TLIF may be appropriate for selected patients when decompression and stabilization are both needed.

What factors predict successful fusion outcomes?

Evidence-based predictors include proper patient selection, adequate bone quality, smoking cessation, and optimal graft placement. Studies show that comprehensive preoperative optimization significantly supports fusion healing.

What is MIS TLIF?

MIS TLIF is a fusion procedure where a spacer is placed between vertebrae through small side incisions, combined with screws and rods to stabilize and decompress.

When It's Used

Degenerative disc disease with instability
Spondylolisthesis
Recurrent disc herniation
Stenosis with instability
Need for both decompression AND stabilization

The Procedure

Usually 2 small incisions (one side)
Disc removed and replaced with spacer
Pedicle screws inserted for stability
Rods connect screws
Decompress nerves + stabilize spine
Procedure time: 90-180 minutes

Advantages (vs. Open TLIF)

Factor	MIS TLIF	Open TLIF
Incision	1-2 small	3-4 inches
Blood loss	150-200mL	300-500mL
Hospital stay	1-2 days	2-3 days
Recovery	4-8 weeks	8-12 weeks
Pain (Day 1)	2-3/10	4-5/10
Success rate	80-90%	80-90%

Expected Outcomes

Pain relief depends on the indication and symptom pattern
Patient satisfaction varies by diagnosis, anatomy, and recovery
Fusion success depends on bone quality, nicotine status, medical factors, and follow-up healing
Long-term outcomes depend on patient-specific factors

Recovery Timeline

Surgery day: Home next morning
Week 1-2: Light walking, minimal restrictions
Week 2-4: Gradual activity increase
Week 4-6: Return to work/light activities
Week 8-12: Full return to normal
Month 3+: All activities unrestricted

Hospital Stay

Usually 1-2 days

Motion Loss

Fusion level loses motion (trades motion for stability)
Adjacent levels maintain motion
Most patients don't notice motion loss

Risks (All Rare)

Pseudoarthrosis (non-fusion): 2-5%
Nerve injury: <1%
Infection: 0.5-1%
Bleeding: <1%
Adjacent segment disease (long-term): 20-30% over 10 years

Questions About MIS TLIF?

Dr. Greenberg specializes in minimally invasive fusion procedures with patient-specific planning.

Schedule Consultation Get Second Opinion

Lumbar Fusion (TLIF/PLIF)

When Lumbar Fusion Is Recommended

How Lumbar Fusion Works

Disc Removal

Cage Placement

Instrumentation

Bone Healing

TLIF vs PLIF Approach

Benefits of Lumbar Fusion

Risks & Considerations

Recovery Timeline

Surgery Day

Early Healing

Activity Progression

Fusion Progress

Ideal Candidates

Alternative Treatments

Conservative Options

Surgical Alternatives

Why Choose Greenberg Spine

Fellowship Training

Robotic Navigation

Comprehensive Care

What to Expect

Pre-Operative

Surgery Day

Frequently Asked Questions

Ready to Stabilize Your Spine?

Related Procedures

Robotic Fusion

Laminectomy

Revision Surgery

About this content

Related Topics

Spondylolisthesis

Degenerative Disc Disease

Robotic Spinal Fusion

Lumbar Laminectomy

Robotic Spinal Fusion: Myths vs Evidence

Minimally Invasive Spine Surgery Fort Wayne

Contact Us

Evidence Snapshot

Research-Backed Benefits

Clinical Evidence

Evidence & Research — FAQs

MIS TLIF (Transforaminal Lumbar Interbody Fusion)

What is MIS TLIF?

When It's Used

The Procedure

Advantages (vs. Open TLIF)

Expected Outcomes

Recovery Timeline

Hospital Stay

Motion Loss

Risks (All Rare)

Questions About MIS TLIF?