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Lumbar Stenosis

Lumbar stenosis is a narrowing of the spinal canal in the lower part of the spine. This narrowing places pressure on the spinal cord and/or nerves. While some patients are born with this narrowing, most cases of lumbar stenosis occur in patients over the age of 50 and are the result of aging and "wear and tear" on the spine.

Spinal Vertebra and SPinal Cord Cross-section

Many patients with lumbar stenosis remain symptom-free until other conditions further compress the spinal canal. Other conditions that can cause compression include:

 

  • Calcification (the ligaments of the spine thicken and harden)
  • The formation of osteophytes (bony growths on bones and joints)
  • Bulging or herniated discs
  • The slipping of one vertebra onto another (called spondylolisthesis)
  • Trauma (such as from an accident)

Symptoms
The symptoms of lumbar spinal stenosis include:

 

  • Low back pain that eases when bending forward or sitting.
  • Pain, weakness, or numbness in the legs, calves or buttocks.
  • Burning sensations, tingling, and pins and needles in the involved extremity, such as a leg.
  • Bladder and bowel problems (in severe cases).
  • Although rare, very severe cases can also cause significant loss of function or even paraplegia.

Diagnosis
The physicians at our practice care about your health. That is why we will use a combination of techniques and sophisticated technology to help make an accurate diagnosis:

 

  • Medical history. We will talk to you about your symptoms, how severe they are, and what treatments you have already tried.
  • Physical examination. You will be carefully examined by one of our spine specialists for limitations of movement, problems with balance, pain, loss of reflexes in the extremities, muscle weakness, loss of sensation, and other signs of spinal cord injury.
  • Diagnostic tests. Generally, we start with plain x-rays, which allow us to rule out other problems such as tumors and infections. CT scans and MRIs give us three-dimensional views of the spine and can help detect osteophytes and herniated discs. With some patients we may order a mylogram. This is a test that involves injecting a liquid dye into the spinal column to show where the pressure on the nerve is occurring.

Nerve pressure may result in radiculopathy

Non-Operative Treatment
Most cases of lumbar stenosis are successfully treated with non-surgical techniques such as pain medications and anti-inflammatory medications. Severe pain may also be treated with corticosteroids that are injected into the lower back (i.e. epidural steroid injections). Depending on the extent of nerve involvement, some patients may need to temporarily restrict their activities. However, most patients only need to rest for a brief time. Physical therapy exercises will also be prescribed to help strengthen and stabilize the spine as well build endurance and increase flexibility.

If these non-surgical measures do not work, we may recommend surgery. There are a number of surgical techniques that we can use to treat this condition. The goal of each of these surgical treatments is to widen the spinal canal and relieve the pressure by removing the cause of compression. We will, of course, discuss all of your options with you before deciding which procedure is best for you.

Surgical Treatment
The most common surgery for lumbar stenosis is called a decompressive laminectomy in which the laminae (roof) of the vertebrae are removed, creating more space in the spinal canal for the nerves. If only a portion of the laminae need to be removed, it is called a laminotomy. If there are herniated or bulging discs, these may also be removed (this is called a discectomy) to increase canal space. Sometimes the foramen (the area where the nerve roots exit the spinal canal) may also need to be enlarged. This procedure is called a foraminotomy.

For those patients who need surgical repair on more than one level, or who have significant spinal instability, spinal fusion may be required in addition to the decompression surgery. This traditionally involves taking a small piece of bone (usually from the hip) and grafting it onto the spine. More recently, for some cases, we are using bone substitutes such as bone morphogenetic proteins (BMPs) to facilitate spine fusion. Spinal implants (called instrumentation) such as screws and rods are used to support the spine and provide additional stability while the fusion is healing. In most cases, we can determine ahead of time if fusion surgery is necessary. At our practice, we perform many fusions using minimally invasive surgical techniques, thus reducing trauma to soft tissues, reducing blood loss, and ultimately leading to a more rapid recovery. If a fusion is necessary, we will discuss this with you in advance.

Recovery
At our practice, most patients can begin getting out of bed on the same day that surgery is performed! Activity is gradually increased and patients are typically able to go home within 1-2 days after their procedure, depending on the extent of the surgery. As with most surgeries, there will be some pain after the procedure. However, we have pain medications available that will keep you comfortable.

At home, you will need to continue to rest. You may still need to take the pain medications for a while. However, pain and discomfort should gradually reduce within a week or two after surgery.

You will be instructed on how to gradually increase your activity. We will provide specific instruction regarding when and how to resume such basic activities as walking and driving. In addition, we will discuss with you a timetable for returning to more advanced activities such as yard work, sports and work.

Your health is our primary concern. Like you, we are eager to see you return to a healthy, pain-free and active life. If you have any questions about your condition, your treatment or your recovery, do not hesitate to call us.

Dr Mark McLaughlin Spinal Treatments
 

LastUpdate: 2016-05-08 08:47:53

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