Extreme Lateral Interbody Fusion (XLIF)

What Is Extreme Lateral Interbody Fusion (XLIF)?

Extreme lateral interbody fusion (XLIF) is a minimally invasive spinal fusion procedure performed through a small incision on the side of the body. During the procedure, the damaged spinal disc is removed and replaced with an implant and bone graft, allowing adjacent vertebrae to fuse together and stabilize the spine.

Unlike traditional fusion approaches performed from the front or back, the lateral approach allows surgeons to access the spine while minimizing disruption to muscles, bones, and ligaments. This technique may reduce surgical time, blood loss, and postoperative pain, and many patients are able to walk shortly after surgery.

Conditions Treated with XLIF

XLIF may be recommended for a variety of lumbar spine conditions, including:

• Degenerative disc disease
• Degenerative scoliosis
• Spondylolisthesis
• Recurrent disc herniation
• Lumbar spinal stenosis
• Adjacent segment disease
• Failed previous fusion surgery
• Spinal instability

These conditions may cause painful motion in the spine and nerve compression that requires stabilization.

Symptoms Treated with XLIF

Patients who may benefit from XLIF often experience:

• Persistent lower back pain
• Leg pain or sciatica
• Numbness or tingling in the legs
• Weakness in the lower extremities
• Difficulty standing or walking
• Pain with movement
• Symptoms not improving with conservative care

These symptoms typically occur when a damaged disc or spinal instability compresses nearby nerves.

How XLIF Is Diagnosed

Before recommending XLIF surgery, your spine specialist will perform a comprehensive evaluation. Diagnostic testing may include:

• Physical and neurological examination
• X-rays to evaluate alignment
• MRI to identify nerve compression
• CT scan for detailed bone imaging
• Additional imaging when necessary

Surgery is typically considered when conservative treatment has failed.

Extreme Lateral Interbody Fusion Treatment

Non-Surgical Treatment

Conservative treatment is usually attempted first and may include:

• Activity modification
• Anti-inflammatory medication
• Physical therapy
• Epidural steroid injections
• Pain management
• Core strengthening exercises

If symptoms persist, surgical treatment may be recommended.

Surgical Treatment

During XLIF surgery:

• A small incision is made on the side of the body
• Specialized instruments access the spine laterally
• The damaged disc is removed
• An implant filled with bone graft is placed
• Screws and rods may stabilize the spine
• Vertebrae fuse together over time

This minimally invasive approach helps stabilize the spine while reducing muscle disruption.

Recovery After XLIF Surgery

Recovery is typically faster than traditional fusion procedures. Many patients are able to walk the same day or shortly after surgery. Gradual return to activity occurs over several weeks, while full fusion may take several months. Physical therapy is often recommended to restore strength and mobility.

When to See an Orthopedic Specialist

You should seek evaluation if you experience:

• Persistent lower back pain
• Pain radiating into the legs
• Numbness or tingling
• Weakness in the lower extremities
• Difficulty standing or walking
• Symptoms not improving with conservative care

Prompt evaluation helps determine whether spinal fusion is appropriate.

Why Choose TMI Sports Medicine & Orthopedic Surgery

TMI provides comprehensive spine care, including conservative treatment and advanced minimally invasive procedures such as extreme lateral interbody fusion. Our spine specialists focus on stabilizing the spine, relieving nerve compression, and helping patients return to daily activities safely.