Roof Of Intervertebral Foramen

Roof and floor of neural foramen are formed by pedicles of adjacent vertebrae.

Roof of intervertebral foramen.

A pair of spinal nerve roots leaves the dural sac just above the level of each intervertebral foramen. Posterior wall is facet joint and inferior and superior articular processes. Floor superior vertebral notch of the vertebra below. The intervertebral foramina allow passage of structures out of and into the vertebral canal.

In the lumbar region where nerve root compression is more common the nerves increase in size from above downwards whereas the. This sleeve encloses the nerve roots as far as the intervertebral foramen and spinal nerve where the dura. Each foramen lying between the pedicles of the adjoining vertebrae is bounded anteriorly by the vertebral bodies and the disc and posteriorly by the facet joints fig. Also because the.

Posterior wall superior articular process of the vertebra below. The intervertebral foramen also called the neural foramen is the opening between the vertebrae through which spinal nerve roots travel and exit to other parts of the body. Anterior wall of neural foramen is intervertebral disk and adjacent endplates. The short often slitlike passage that on both the left and right sides connects the third brain ventricle of the diencephalon with the lateral ventricles of the cerebral hemispheres.

The large opening between the vertebral arch and body is the vertebral foramen which contains the spinal cord. The foramina or openings are present between every pair of vertebrae in these areas. If the foramina narrow they can put pressure on the nerve roots near them causing pain. They do so by penetrating the dural sac in an inferolateral direction taking with them an extension of dura mater and arachnoid mater referred to as the dural sleeve see fig.

Roof inferior vertebral notch of the vertebra above. Nerve roots dorsal root ganglia and dura. The intervertebral foramen also called neural foramen and often abbreviated as iv foramen or ivf is a foramen between two spinal vertebrae. The intervertebral foramina which transmit the spinal nerves and the accompanying radicular arteries which supply the spinal cord are on the lateral aspect of the vertebral column.

A number of structures pass through the foramen. Anterior lower posterolateral aspect of a vertebral body and the intervertebral disc below in the thoracic and lumbar regions. The word foramen is the singular form while foramina is the plural form. In the intact vertebral column the vertebral foramina of all of the vertebrae align to form the vertebral spinal canal which serves as the bony protection and passageway for the spinal cord down the back.

The passage is bounded anteriomedially by the column of fornix and posterolaterally by the anterior pole of the thalamus. In the cervical region a portion of the vertebral body below predominately the uncinate process also contributes to the anterior boundary.