What Is Spinal Stenosis?
Spinal stenosis occurs when the space around the spinal cord narrows and puts pressure on the cord and spinal nerves.
When intervertebral discs collapse and osteoarthritis develops, your body may respond by growing new bone in your facet joints to help support the vertebrae. Over time, this bone overgrowth (called bone spurs) can lead to a narrowing of the spinal canal. Osteoarthritis can also cause the ligaments that connect vertebrae to thicken, which can narrow the spinal canal, causing pressure and pain.