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Lateral Lumbar Interbody Fusion

Lateral lumbar interbody fusion also known as extreme lateral (XLIF) or direct lateral interbody fusion (DLIF) is a minimally invasive spinal procedure performed to treat back and leg pain caused by degenerative discs and other problems within the vertebral column. Interbody fusion involves the fusing of the affected vertebrae found in the lumbar region (lower back). In lateral lumbar interbody fusion, your doctor will access the spine from incisions made in your side.

Dr. Michael Gerling, spine surgeon, holding a spine model and discussing treatment options with a patient

Indications

  • Lateral lumbar interbody fusion is indicated for:
  • Degenerative disc disease: wearing out of intervertebral discs with age
  • Scoliosis: abnormally curved spine
  • Spinal stenosis: narrowing of the spinal canal
  • Spondylolisthesis: slipping of vertebra from their normal position
  • Fractures
  • Infections
  • XLIF is not recommended in the following situations:
  • When the displacement of the vertebrae in degenerative spondylolisthesis is greater than 50%
  • Severe compression of a spinal nerve
  • Presence of scarring from prior surgery or abscess

Surgical Procedure

When medication and conservative treatments fail to improve your back pain, your doctor may recommend a lateral lumbar interbody fusion procedure (XLIF). XLIF usually takes about one hour and is performed under general anesthesia. You will be placed on the operating table, positioned on your side. Your surgeon will use X-rays to identify the location of the degenerated disc and will mark your skin over this area of your spine. A small incision is made in your lower back region through which your surgeon inserts a finger to protect the abdominal lining from the instruments to be inserted laterally. Your surgeon will then make a second incision on your side in order to introduce the operating instruments.

X-rays and nerve monitoring devices are used during the procedure to prevent damage to the adjacent tissues and nerves. Your surgeon removes the degenerated intervertebral disc and prepares the disk space for fusion. A stabilizing disk implant is inserted into the empty disc space. The implant may be filled with bone graft, which will help in the fusion of the two vertebrae. The implant helps maintain proper disk height and provides good support to the operated spinal segment. In some cases your surgeon may secure the implant with plates or screws for additional support. Once the implant is in position, final X-rays are taken to confirm proper placement of the implant. At the end of the procedure, the small skin incisions are closed with stitches and bandaged.

Post-Operative Care

Recovery from lateral lumbar interbody fusion procedure varies from patient to patient. Depending on your condition you may be able to return home the same day after the procedure, or may have to stay in the hospital for a few more days. You may notice an immediate improvement in your symptoms after the surgery or they symptoms may disappear gradually. You may experience some pain at the incision sites. This is quite normal; your doctor may prescribe pain medications to alleviate your discomfort. As there is less damage to the adjacent tissues, you may be able to get up and walk around the night after your surgery. Most patients are usually able to return to their normal activities within a few months after XLIF.

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Advantages

The advantages of XLIF include:

  • Minimally invasive procedure which requires less surgical time reducing your time under anesthesia.
  • Less pain, scarring and blood loss as the procedure causes less damage to the adjacent tissues.
  • Ensures early recovery and faster return to your normal activities.

Risks and Complications

As with any procedure, XLIF is associated with certain risks and complications including:

  • Formation of blood clots or deep vein thrombosis
  • Improper fusion of the implant
  • Injury to adjacent tissues
  • Nerve or spinal cord damage
  • Infection
  • Pneumonia
  • Urinary tract infection
  • Stroke

XLIF is a safe and effective minimally invasive procedure that can alleviate your symptoms of back pain and help you return to your normal activities of daily living.

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