Stenosis is a Latin term that simply means tightness or tightening. In the lumbar spine, stenosis means a tightening around the nerves that are contained within the lower part of the lumbar spine. And this stenosis can be caused by a variety of factors. This lumbar stenosis can be caused by disc bulges or disc herniations. It can be caused by degenerative arthritis of the lumbar spine that causes a thickening of the ligament and flavum. Or an enlargement of the facet joints of the lumbar spine that then encroach on the space that's available for the nerves. Stenosis can also be caused by other things like a tumor or an infection in the lumbar spine. Stenosis is a simple general term that simply means a tightening of the space that's available for the lumbar nerves that can be caused by a variety of factors.
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