Disease: Spinal stenosis

Overview

Spinal stenosis is a narrowing of the spaces within your spine, which can put pressure on the nerves that travel through the spine. Spinal stenosis occurs most often in the lower back and the neck.

Some people with spinal stenosis may not have symptoms. Others may experience pain, tingling, numbness and muscle weakness. Symptoms can worsen over time.

Spinal stenosis is most commonly caused by wear-and-tear changes in the spine related to osteoarthritis. In severe cases of spinal stenosis, doctors may recommend surgery to create additional space for the spinal cord or nerves.

Types of spinal stenosis

The types of spinal stenosis are classified according to where on the spine the condition occurs. It's possible to have more than one type. The two main types of spinal stenosis are:

  • Cervical stenosis. In this condition, the narrowing occurs in the part of the spine in your neck.
  • Lumbar stenosis. In this condition, the narrowing occurs in the part of the spine in your lower back. It's the most common form of spinal stenosis.

Spinal stenosis care at Mayo Clinic

Source: http://www.mayoclinic.com

Symptoms

Many people have evidence of spinal stenosis on an MRI or CT scan but may not have symptoms. When they do occur, they often start gradually and worsen over time. Symptoms vary depending on the location of the stenosis and which nerves are affected.

In the neck (cervical spine)

  • Numbness or tingling in a hand, arm, foot or leg
  • Weakness in a hand, arm, foot or leg
  • Problems with walking and balance
  • Neck pain
  • In severe cases, bowel or bladder dysfunction (urinary urgency and incontinence)

In the lower back (lumbar spine)

  • Numbness or tingling in a foot or leg
  • Weakness in a foot or leg
  • Pain or cramping in one or both legs when you stand for long periods of time or when you walk, which usually eases when you bend forward or sit
  • Back pain

When to see a doctor

See your doctor if you have any of the symptoms listed.

Source: http://www.mayoclinic.com

Causes

The backbone (spine) runs from your neck to your lower back. The bones of your spine form a spinal canal, which protects your spinal cord (nerves).

Some people are born with a small spinal canal. But most spinal stenosis occurs when something happens to narrow the open space within the spine. Causes of spinal stenosis may include:

  • Overgrowth of bone. Wear and tear damage from osteoarthritis on your spinal bones can prompt the formation of bone spurs, which can grow into the spinal canal. Paget's disease, a bone disease that usually affects adults, also can cause bone overgrowth in the spine.
  • Herniated disks. The soft cushions that act as shock absorbers between your vertebrae tend to dry out with age. Cracks in a disk's exterior may allow some of the soft inner material to escape and press on the spinal cord or nerves.
  • Thickened ligaments. The tough cords that help hold the bones of your spine together can become stiff and thickened over time. These thickened ligaments can bulge into the spinal canal.
  • Tumors. Abnormal growths can form inside the spinal cord, within the membranes that cover the spinal cord or in the space between the spinal cord and vertebrae. These are uncommon and identifiable on spine imaging with an MRI or CT.
  • Spinal injuries. Car accidents and other trauma can cause dislocations or fractures of one or more vertebrae. Displaced bone from a spinal fracture may damage the contents of the spinal canal. Swelling of nearby tissue immediately after back surgery also can put pressure on the spinal cord or nerves.

Source: http://www.mayoclinic.com

Diagnosis

To diagnose spinal stenosis, your doctor may ask you about signs and symptoms, discuss your medical history, and conduct a physical examination. He or she may order several imaging tests to help pinpoint the cause of your signs and symptoms.

Imaging tests

These tests may include:

  • X-rays. An X-ray of your back can reveal bony changes, such as bone spurs that may be narrowing the space within the spinal canal. Each X-ray involves a small exposure to radiation.
  • Magnetic resonance imaging (MRI). An MRI uses a powerful magnet and radio waves to produce cross-sectional images of your spine. The test can detect damage to your disks and ligaments, as well as the presence of tumors. Most important, it can show where the nerves in the spinal cord are being pressured.
  • CT or CT myelogram. If you can't have an MRI, your doctor may recommend computerized tomography (CT), a test that combines X-ray images taken from many different angles to produce detailed, cross-sectional images of your body. In a CT myelogram, the CT scan is conducted after a contrast dye is injected. The dye outlines the spinal cord and nerves, and it can reveal herniated disks, bone spurs and tumors.

Source: http://www.mayoclinic.com

Complications

Rarely, untreated severe spinal stenosis may progress and cause permanent:

  • Numbness
  • Weakness
  • Balance problems
  • Incontinence
  • Paralysis

Source: http://www.mayoclinic.com

Lifestyle and home remedies

You'll have regular follow-up appointments with your doctor to monitor your condition. He or she may suggest that you incorporate several home treatments into your life, including:

  • Trying pain relievers. Over-the-counter medications such as aspirin, ibuprofen (Advil, Motrin IB, others), naproxen (Aleve, others) and acetaminophen (Tylenol, others) can help reduce pain and inflammation.
  • Applying hot or cold packs.Some symptoms of cervical spinal stenosis may be relieved by applying heat or ice to your neck.
  • Maintaining a healthy weight. Aim to keep a healthy weight. If you're overweight or obese, your doctor may recommend that you lose weight. Losing excess weight can reduce pain by taking some stress off the back, particularly the lumbar portion of the spine.
  • Exercising. Flexing, stretching and strengthening exercises may help open up the spine. Talk with a physical therapist or your doctor about what exercises are safe to do at home.
  • Using a cane or walker. In addition to providing stability, these assistive devices can help relieve pain by allowing you to bend forward while walking.

Source: http://www.mayoclinic.com

Risk factors

Most people with spinal stenosis are over the age of 50. Though degenerative changes can cause spinal stenosis in younger people, other causes need to be considered. These include trauma, congenital spinal deformity such as scoliosis, and a genetic disease affecting bone and muscle development throughout the body. Spinal imaging can differentiate these causes.

Source: http://www.mayoclinic.com

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