What is lumbar spinal stenosis?
Lumbar spinal stenosis is a narrowing of the spinal canal in the lower back, known as the lumbar area. This narrowing occurs when the growth of bone or tissue or both reduces the size of the openings in the spinal bones. This narrowing can squeeze and irritate the nerves that branch out from the spinal cord . It can also squeeze and irritate the spinal cord itself. This may cause pain, numbness, or weakness, most often in the legs, feet, and buttocks.
