Treatment / Spine / Anterior Lumbar Interbody Fusion

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SPINE | LAS VEGAS

Anterior Lumbar Interbody Fusion

Dr. Andrew Lee, MD | Nevada Spine Clinic, Las Vegas, Nevada

Understanding the Lumbar Spine

The lumbar spine bears the majority of the body’s mechanical load and allows the trunk to bend, extend, and rotate. The intervertebral discs between the five lumbar vertebrae distribute this load and provide flexibility. When discs degenerate or vertebrae become unstable, surgical stabilization through fusion may be necessary.


The anterior approach to the lumbar spine allows Dr. Andrew Lee to place a larger interbody graft than posterior approaches permit, improving fusion rates and restoring disc height more effectively in appropriate patients.

Common Conditions Treated

  • Lumbar Degenerative Disc Disease: Progressive disc degeneration causing instability and lower back pain that has not responded to conservative measures.
  • Spondylolisthesis: Forward slippage of one vertebra over another causing nerve compression and instability requiring surgical correction and fusion.
  • Lumbar Flatback Deformity: Loss of normal lumbar lordosis that can be partially corrected throughanterior column restoration.

Conservative Non-Surgical Care

Dr. Andrew Lee at Nevada Spine Clinic in Las Vegas ensures all candidates for lumbar fusion have completed an adequate course of conservative management including physical therapy, medications, and injections before surgical intervention is recommended.

ALIF is reserved for patients in whom non-operative treatment has failed and in whom the anatomy and clinical findings support the anterior approach as the most appropriate surgical strategy.

Anterior Lumbar Interbody Fusion

Anterior lumbar interbody fusion allows Dr. Andrew Lee to access the lumbar spine through an incision in the lower abdomen, reaching the front of the disc space directly. This procedure is performed at Southern Hills Hospital in Las Vegas with vascular surgery assistance to safely mobilize the aorta and vena cava.

The degenerated disc is completely removed and a large interbody cage packed with bone graft material is placed in the disc space. The larger footprint of an anterior cage compared to posterior approaches allows for better restoration of disc height, lumbar lordosis, and endplate contact area, all of which contribute to higher fusion rates.

Posterior percutaneous screw fixation is typically added through separate small incisions to provide rotational stability. ALIF is particularly effective for restoring lumbar alignment and is a component of many complex lumbar reconstruction procedures.

The primary goals of this procedure are to:
  • Achieve solid bone fusion at the affected lumbar levels
  • Restore proper disc height and lumbar alignment
  • Relieve lower back pain and leg symptoms
  • Stabilize the lumbar spine and prevent further degeneration

Potential Risks

  • Vascular injury: Major blood vessel injury is a serious but rare risk of the anterior approach. Vascular surgery assistance minimizes this risk.
  • Retrograde ejaculation: Possible in male patients due to proximity of the sympathetic nerve plexus. All male patients are informed of this risk before surgery.
  • Incomplete fusion: Factors such as smoking, osteoporosis, and diabetes can impair fusion. Dr. Lee optimizes these modifiable factors before surgery.
  • Infection: Antibiotic prophylaxis and careful wound care reduce infection risk.
  • Nerve root injury: Uncommon with proper technique and intraoperative monitoring.

Postoperative Recovery and Rehabilitation

Most patients undergoing ALIF are hospitalized for one to two nights. Walking begins the day of or day after surgery. A lumbar brace is typically worn for several weeks to protect the reconstruction during early healing.

Physical therapy is introduced at four to six weeks focusing on core strengthening and gradual return to activity. Most patients return to light work within four to six weeks and full activity within four to six months.

What to Expect After Surgery

Lower back pain improvement is typically gradual as the fusion consolidates over three to six months. Leg pain from nerve compression often improves more quickly as the nerve root decompression takes effect.

Some temporary abdominal muscle weakness and stiffness following the anterior approach is expected and improves with rehabilitation over several weeks.

Do not soak your wound.

No bathtub, swimming, or hot tub until cleared by Dr. Lee.

Wound Care and Medication Management

Follow wound care instructions provided at discharge. Avoid soaking the incision in water until cleared by Dr. Lee. The abdominal incision requires careful monitoring for signs of infection during healing.

Maintain adequate hydration and nutrition to support fusion healing. Pain medication refills require forty-eight hours notice from your pharmacy and are not processed on weekends.

Activity Guidelines After Surgery

Wear the prescribed lumbar brace as directed. Avoid heavy lifting, bending, and twisting during the early recovery period. Do not drive until Dr. Lee provides clearance at your follow-up appointment.

Contact Nevada Spine Clinic or the nearest emergency room immediately for sudden neurological changes, abdominal pain, fever above 101.5 degrees Fahrenheit, or significant wound changes.

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No bathtub, swimming, or hot tub until cleared by Dr. Lee.

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Dr. Andrew Lee, MD | Nevada Spine Clinic, Las Vegas

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