Transforaminal Lumbar Interbody Fusion (TLIF) Surgery

Houston Methodist spine surgeons use transforaminal lumbar interbody fusion (TLIF), a surgical approach used to treat certain lumbar spine conditions. While most patients begin with non-surgical care, TLIF — a type of spinal fusion — may be considered when symptoms persist and imaging confirms spinal instability or nerve compression as the source.

At Houston Methodist, TLIF is not a first-line treatment. Surgery is considered only when conservative care fails to provide relief and clinical findings clearly support fusion. Our orthopedic spine surgeons and neurosurgeons work together to evaluate whether surgery — and specifically TLIF — is appropriate based on your condition, anatomy and goals.

With a high volume of spine procedures performed annually, our team has extensive experience in TLIF surgery and recovery.

What Is TLIF?

TLIF is a surgical procedure to alleviate nerve compression in which a portion of the damaged or diseased disk is removed through a posterior (back) incision. An implant (interbody spacer) is placed between the vertebrae along with bone graft material to promote fusion. TLIF is a type of lumbar fusion, meaning it targets areas in the lower back. It is one of several lumbar fusion approaches, including ALIF and XLIF.

How Does TLIF Work?

TLIF is typically performed under general anesthesia. During the procedure, your surgeon makes an incision in the back to access the affected disks through a natural opening in the spine (the foramen), which allows access to the disk while minimizing disruption to surrounding structures.

Once the disk material is removed, a bone graft from the patient or a donor will be inserted between the vertebrae for added height. Then pedicle screws and rods are placed to stabilize the area. Accessing the spine through the foramen minimizes disruption or damage to surrounding muscle tissue.

In most cases, TLIF is performed as a single surgical procedure, though the exact approach depends on the complexity of the condition being treated.

What Conditions Does TLIF Treat?

TLIF may be used to treat a range of lumbar spine conditions that cause nerve compression and pain when non-surgical treatment options have not provided adequate relief. In many cases, patients continue with non-surgical treatment until symptoms, function or stability change enough to warrant surgery.

Degenerative Disk Disease

Degenerative disk disease is a common, age-related condition in which spinal disks between vertebrae gradually break down and lose their shock-absorption properties. Symptoms include low back pain, radiating pain that worsens with bending and numbness in the legs. Physical therapy and pain management are typically first-line treatments applied before TLIF is considered.

Herniated Disk

A herniated disk occurs when the inner material of a spinal disk pushes through its outer casing and compresses nearby nerve roots, causing localized or radiating pain, weakness and numbness. In select cases where instability or recurrent nerve compression is present, TLIF may be recommended.

Though a bulging disk is similar, the center of the disk does not break through the disk casing.

Sciatica

Sciatica refers to nerve-related leg pain caused by an underlying lumbar spinal condition. TLIF may be used to address the root cause of sciatic nerve compression in select cases.

Spinal Stenosis

Spinal stenosis involves narrowing of the spinal canal, which can place pressure on the spinal cord and nerve roots, and can cause pain, numbness or weakness in the lower back and legs.

This condition is commonly driven by age-related changes to the body, such as bone spur formation and thickening ligaments. TLIF may be performed alongside decompression when instability is present.

Spondylolisthesis

Spondylolisthesis occurs when one vertebra slips forward or backward over the one below it, leading to instability and nerve compression. This slippage can be caused by aging, spinal fracture or congenital issues (from birth). TLIF is often used to stabilize the slipped vertebra and restore proper spinal alignment, relieving symptoms.

Who Qualifies for TLIF?

TLIF surgery is typically considered only after a confirmed lumbar condition diagnosis and conservative, non-surgical treatments have not adequately relieved symptoms. Candidacy depends on factors such as spinal stability, alignment, severity of symptoms and overall health.

Your care team will review imaging tests such as MRI or CT scans, treatment history and symptoms to determine whether TLIF offers the safest and most durable option. TLIF or any type of spinal fusion surgery is recommended only when imaging, symptoms and response to prior treatments all point to spinal instability as the main source of pain.

When appropriate, your care team will also discuss less invasive or motion‑preserving options such as physical therapy, pain management and medication — and why TLIF surgery may or may not be recommended. In some cases, a less invasive or alternative surgical approach may be more appropriate.

Preparing for TLIF

Preparation begins before the procedure. Your doctor may recommend steps such as:

• Doing pre‑surgical strengthening or conditioning exercises
• Avoiding smoking, vaping or other tobacco use
• Adjusting medications, including blood thinners
• Arranging a home support system, including help with transportation, meals and daily activities
• Planning for post‑surgical support
• Eating a healthy, protein‑rich diet
• Showering with antimicrobial soap before surgery to prevent infection
• Avoiding food and drink after midnight before the procedure

Recovering from TLIF

Like any spinal fusion procedure, TLIF is a major surgery that typically requires a longer recovery period than less invasive procedures. Recovery varies by procedure and individual.

Many patients return to light daily activities within a few months, while full recovery and bone healing can take up to a year. Patients with desk jobs may be able to return to the job after several weeks, while those in physically demanding roles may need time off for several months.

Walking regularly can help promote circulation and support healing. Avoid bending, lifting and twisting for six weeks post-surgery, at minimum. Physical therapy often plays an important role in regaining strength and mobility. Your doctor will guide you on activity restrictions, return‑to‑work timing and pain management throughout recovery.