What causes sciatica?
Sciatica is caused by irritation of the root(s) of the lower lumbar and lumbosacral spine.
Additional common causes of sciatica include:
- Lumbar spinal stenosis (narrowing of the spinal canal in the lower back)
- Degenerative disc disease (breakdown of discs, which act as cushions between the vertebrae)
- Spondylolisthesis (a condition in which one vertebra slips forward over another one)
- Muscle spasm in the back or buttocks
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