Spinal stenosis, or spinal canal stenosis, is a narrowing of the canal in which the spinal cord sits.
Cervical spinal stenosis is where the spinal canal narrows in your neck, causing weakness or numbness in your arms and legs. The aim of surgery is to prevent further damage to your spinal cord.
Lumbar spinal stenosis is where the spinal canal narrows in your lower back. This may cause pain or weakness in your legs. The aim of surgery is to prevent your symptoms getting worse.
Your nervous system controls much of what your body does including walking, speaking and other activities. Learn more about how it works.