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Lumbar Spinal Stenosis - Cause
The most common cause of lumbar
spinal stenosis is age-related changes of the spine.
These changes include thickening of soft tissues and a gradual deterioration of
spinal
discs and
joints that connect the spine's vertebrae. Any of
these conditions can narrow the spinal canal. Spinal stenosis usually develops
gradually and may begin to squeeze
the spinal cord or its nerve roots
.
Age-related degeneration often occurs in association with certain disorders:
- Osteoarthritis of the spine wears away joint cartilage and causes bony growths (spurs).
- Certain bone diseases, such as Paget's disease, ankylosing spondylitis, rheumatoid arthritis, and diffuse idiopathic skeletal hyperostosis, may soften the spinal bones or cause too much bone to grow.
Other conditions that may cause spinal stenosis include:
- An abnormally narrow spinal canal, which can be an inherited condition.
- Spondylolysis, which is a defect or fracture on one or both of the wing-shaped parts of a vertebra. A vertebra may slide forward or backward over the bone below and may squeeze the spinal cord or a nerve root.
- Spinal fracture.
- Cancer.
- Fibrosis-which is excess, ropy tissue much like scar tissue-from having spine surgery in the past.
WebMD Medical Reference from Healthwise
Last Updated:
February 21, 2008
This information is not intended to replace the advice of a doctor.
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information.
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Lumbar Spinal Stenosis Topics
Lumbar Spinal Stenosis
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