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Home » Orthopaedics » Spine » Spinal Stenosis Surgical
Spinal Stenosis Surgical

Spinal Stenosis Surgical

Spinal stenosis is the narrowing of the spinal canal or neural foramina. Each bone in the vertebral column has a central opening through which the spinal cord passes, and other openings called neural foramina through which nerve roots branch out. When these openings narrow down, pressure is...
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Spinal stenosis is the narrowing of the spinal canal or neural foramina. Each bone in the vertebral column has a central opening through which the spinal cord passes, and other openings called neural foramina through which nerve roots branch out. When these openings narrow down, pressure is exerted on the nerves producing pain in the neck, back and legs.

Spinal stenosis most commonly occurs in people over 50 years of age, but can also be seen in young people who have a narrow spinal canal or have had injury to the spine.

Causes.

Spinal stenosis can occur when the disc spaces which are 80% water, dry out. This can lead to inflammation which can exert pressure on the nerve. The main causes include:

Herniation of the discs that cushion bones in the vertebral column

Slipped disc

Arthritis

Bone spur or outgrowth of bone

Thickening of surrounding ligaments

Tumor

Infection

Abnormal curvature of spine from scoliosis

Spinal injury

Birth defects, Paget's disease and achondroplasia, which are characterized by abnormal spinal growth

Signs and Symptoms.

Stenosis may or may not show any symptoms. If symptoms occur, they manifest gradually in the body parts that are supplied from the affected nerve.

Symptoms include:

Neck or back pain

Pain, numbness, cramping or weakness in the arms or legs

Pain extending down the leg

Foot problems

Some of these symptoms may aggravate while standing or walking. In severe cases, you may experience poor balance, or inability to control urine or bowel function.

Diagnosis.

Your doctor may diagnose stenosis following a physical examination to localize the compressed nerve and the region of pain, and to determine sensation, muscle strength and reflexes. Imaging tests may be ordered including:

X-ray to rule out other related disorders with similar symptoms

Magnetic resonance imaging (MRI) to detect any damage to the discs and ligaments, and for presence of tumors and pressure on the nerves.

CT myelogram to view the size and shape of the spinal cord, bone spurs, herniated discs, and tumors.

Treatment.

Your doctor may suggest conservative treatment including:

Anti-inflammatory, muscle relaxant, antidepressant, or anti-seizure drugs

Physical therapy

Massage therapy

Acupuncture

Cold packs and heat therapy

Steroid injections

If these first-line therapies do not help alleviate symptoms, surgery may be recommended.

Surgery.

Your surgeon may recommend foraminotomy, laminectomy, or spinal fusion to alleviate pain due to stenosis. Surgery will be carried out under general anesthesia.

In foraminotomy, your surgeon makes an incision in your back, and separates the underlying layer of muscles and ligaments. Then, the neural foramina is widened by cutting or shaving off some of the bone. In addition, other parts such as the lamina, the bone that forms a crest-like structure, may also be removed by a process called laminectomy.

After this, your surgeon may perform spinal fusion to ensure that the spinal column is stable after surgery. In the spinal fusion procedure, your surgeon uses bone graft taken from another part of the body or a synthetic bone substitute to join two or more vertebral bones together with rods, cages or screws so that there is no movement between them. The muscles and ligaments are put back into place and the incision is sutured.

Constriction of the spinal canal in spinal stenosis causes pinching of the spinal nerves, which occurs as a result of spinal wear and tear due to aging. It leads to pain, which can make standing, walking, and other activities difficult to perform. Considerable relief from pain and other symptoms can be achieved through either conservative treatment, or surgery.


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