What is spinal stenosis?
Different anatomical structures that form the wall of the spinal canal are involved in the development of a spinal stenosis.
Degenerative changes of the vertebral joints, ligaments and intervertebral disks lead to a narrowing of the spinal canal and often enough also of the osseous openings through which the nerves exit (the foramina). An acute narrowing may occur also with a disk protrusion or prolapse.