Patient Testimonials


Read letters and watch video testimonials to learn more about our patients’ experiences with Dr. Antonacci and Dr. Betz.Testimonials By Condition: Spondylolisthesis, Herniated Disc, Scoliosis Kyphosis, Spinal Stenosis Sciatica, Degenerative Disc Disease.


Spondylolisthesis – Degenerative

Spondylolisthesis is a spinal condition in which one vertebra slips forward over the vertebra below, leading to back pain and other symptoms; degenerative spondylolisthesis usually occurs in the lumbar spine, especially at the 4th and 5th lumbar vertebrae (L4 and L5). Treatment options for degenerative spondylolisthesis may be non-surgical for lesser cases, and the more severe cases may require surgery including spinal fusion.

Symptoms of Degenerative Spondylolisthesis

This type of spondylolisthesis is most common among older female patients, usually those over the age of 60. It is the result of degenerative changes in the vertebral structure that cause the joints between the vertebrae to slip forward, and as it worsens can lead to spinal stenosis. Symptoms of degenerative spondylolisthesis may include the following:

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  • Pain, especially after exercise, in the low back, thighs, and/or legs that radiates into the buttocks and/or down the legs (sciatica)
  • Muscle spasms
  • Leg weakness
  • Tight hamstring muscles
  • Irregular gait or limp

Some people with spondylolisthesis are symptom-free and only discover the disorder when seeing a doctor for another health problem. However, the forward slip of the vertebral body in severe cases of degenerative spondylolisthesis often leads to spinal stenosis, nerve compression, pain and neurological injury.

What Causes Degenerative Spondylolisthesis?

Degenerative spondylolisthesis is usually the result of age and “wear and tear” on the spine that breaks down vertebral components. It is different from isthmic spondylolisthesis in that there is no bone defect. Spinal stenosis tends to occur in the early stages of degenerative spondylolisthesis.

Diagnosis of Degenerative Spondylolisthesis

Correct diagnosis is essential. Your doctor will utilize the latest diagnostic technologies, combined with examinations by expert physicians, to ensure that the diagnosis is accurate. Diagnostic tools include:

  • Medical history. You will be asked about your symptoms, their severity, and the treatments you have already tried.
  • Physical examination. You will be carefully examined for limitations of movement, problems with balance, pain, loss of reflexes in the extremities, muscle weakness, loss of sensation or other signs of neurological damage.
  • Diagnostic tests. Generally, doctors start with x-rays, which allow them to rule out other problems such as tumors and infections. They may also use a CT scan or MRI to confirm the diagnosis. In some patients a myelogram is used; this test involves the use of a liquid dye injected into the spinal column to show the degree of nerve compression, slippage between involved vertebrae, and abnormal movement.

Classification of Degenerative Spondylolisthesis

There are several methods used to “grade” the degree of slippage ranging from mild to most severe. Your surgeon will discuss with you the extent of your spondylolisthesis.

In general, physicians use the Meyerding Grading System for classifying slips. This is a relatively easy to understand system; slips are graded on the basis of the percentage that one vertebral body has slipped forward over the vertebral body below. Thus a Grade I slip indicates that 1-24% of the vertebral body has slipped forward over the body below. Grade II indicates a 25-49% slip, Grade III indicates a 50-74% slip, and Grade IV indicates a 75%-99% slip. If the body completely slips off the body below it is classified as a Grade V slip, known as spondyloptosis.

Your physician will consider the degree of slip, and such factors as intractable pain and neurological symptoms, when deciding on the most suitable treatment. Most degenerative spondylolisthesis cases involve Grade I or Grade II. As a general guideline, the more severe slips (especially Grades III and above) are most likely to require surgical intervention.

Non-Operative Treatment of Degenerative Spondylolisthesis

For many early cases of degenerative spondylolisthesis, treatment consists of temporary bed rest, restriction of the activities that caused the onset of symptoms, pain/anti-inflammatory medications, steroid-anesthetic injections, physical therapy and/or spinal bracing.

Degenerative spondylolisthesis can be progressive, meaning the damage will continue to get worse as time goes on. In addition, degenerative spondylolisthesis can cause stenosis, a narrowing of the spinal canal and spinal cord compression. If the stenosis is severe, and all non-operative treatments have failed, surgery may be necessary.

Surgical Treatment of Degenerative Spondylolisthesis

Surgery is needed when there is persistent severe pain, or when neurological damage has occurred or non-operative treatment options have failed.

The most common surgical procedure used by Dr. Antonacci for treatment, is one he also pioneered.   It is the muscle sparing approach to interbody fusion (FLIF).   Unlike FLIF, traditional approaches detach back muscle  such as when a laminectomy is performed in combination with fusion.    Here, the spinal canal is widened by removing or trimming the laminae (roof) of the vertebrae. This is done to create more space for the nerves and relieve pressure on the spinal cord. The surgeon may also need to fuse vertebrae together. If fusion is done, various devices (like screws or interbody cages) may be implanted to enhance fusion and support the unstable spine.  Dr. Antonacci’s’ approach which is muscle sparing, has less blood loss and faster recovery times, without compromising in anyway, visualization or nerve decompression (see FAQ).

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