Sciatica refers to a condition in which an intervertebral disk degenerates and no longer provides a cushion between the vertebrae.

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Sciatica refers to pain that radiates along the path of the sciatic nerve, which branches from your lower back through your hips and buttocks and down each leg, typically caused by a herniated disk, bone spur on the spine, or narrowing of the spine (spinal stenosis) compressing part of the nerve.

Sciatica Refers to a Condition in Which an Intervertebral Disk