What Is the Spinal Canal?

The spinal canal is a tissue formed by the vertebral foramen of the free vertebra and the sacral canal of the sacrum. The upper occipital foramen communicates with the cranial cavity and ends with a sacral canal hole. Its contents include spinal cord, spinal cord capsule, spinal nerve root, blood vessels and a small amount of connective tissue.

Spinal canal

Spinal Canal: The vertebral foramen of all vertebrae are stringed together into a tube called the spinal canal.

1. The spinal canal is composed of a fibrous canal. The anterior wall is formed by the back of the vertebral body, the posterior edge of the intervertebral disc, and

Spinal stenosis

Congenital spinal stenosis is caused by congenital stenosis that causes spinal canal development during spinal growth and formation, including nutritional trauma and other factors. Most patients begin to be asymptomatic, and after mid-life, due to some degenerative lesions or injuries to the spine, the symptoms and signs of spinal stenosis appear. Acquired spinal canal stenosis is caused by prolapse of intervertebral discs, vertebral body hyperplasia, vertebral body slippage, hypertrophy of posterior longitudinal ligament, ligamentum flavum hyperplasia, calcification or ossification, which stimulate spinal nerves and peripheral blood vessels, causing inflammation, adhesions, congestion and edema of neurovascular vessels. This leads to the occurrence of spinal stenosis.