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Narrowing of the Spinal Canal

Spinal stenosis is the narrowing of the spinal canal, caused by a congenital condition, traumatic injury, or – far more frequently – age-related deterioration of the spinal anatomy. Over time, various components of the spine are subjected to significant wear and tear because of a wide range of movement, including bending, turning, and twisting. As the anatomy deteriorates because of osteoarthritis or degenerative disc disease, abnormalities like bone spurs and herniated discs can arise. The presence of these abnormalities reduces the space available for nerve roots and the spinal cord itself. If either of these sensitive neurological components comes into contact with an abnormality, symptoms such as pain, tingling, numbness, or muscle weakness can occur.

Anatomical Components Involved in the Narrowing of the Spinal Canal

What components of the anatomy can cause spinal stenosis? In short, any part of the spine adjacent to the spinal cord or nerve roots:

• Intervertebral discs – spongy cushions between vertebrae; made up of gel-like nucleus pulposus and a fibrous outer wall.
• Facet joints – points where vertebrae meet and articulate.
• Foramina – openings on either side of vertebrae through which nerve roots pass.
• Pedicles – two thick processes that project backward off the vertebral body to connect the body to the vertebral arch.
• Laminae – thin plates that extend off the pedicles and form part of the vertebral arch.
• Ligaments – fibrous tissues that connect bone to bone.

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Treating a Narrowing of the Spinal Canal

The objective of treating spinal stenosis is to reduce pressure on the spinal cord or affected nerve roots. This can typically be accomplished under a doctor’s supervision through the use of stretching, exercise, epidural injections, or other conservative treatment methods. However, if chronic symptoms persist after several weeks of conservative treatment, surgery may become an option. If so, contact Laser Spine Institute to learn about the advantages of a minimally invasive, outpatient procedure performed using advanced, endoscopic technology. Our orthopedic specialists will answer your questions and provide a complimentary review of an MRI or CT scan.

Please note: Laser Spine Institute currently does not perform endoscopic procedures on the thoracic spine.