Roof Of Intervertebral Foramen

Posterior wall is facet joint and inferior and superior articular processes.

Roof of intervertebral foramen.

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 cervical and lumbar regions are the same however because of the size and the fact that the ribs are in the thoracic the thoracic wall will differ. Also because the. This sleeve encloses the nerve roots as far as the intervertebral foramen and spinal nerve where the dura.

Nerve roots dorsal root ganglia and dura. Each lamina forms part of the posterior roof of the vertebral arch. 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. 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 intervertebral foramen also called neural foramen and often abbreviated as iv foramen or ivf is a foramen between two spinal vertebrae. Anterior wall of neural foramen is intervertebral disk and adjacent endplates. 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. Posterior wall superior articular process of the vertebra below.

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. If the foramina narrow they can put pressure on the nerve roots near them causing pain. In the cervical region a portion of the vertebral body below predominately the uncinate process also contributes to the anterior boundary. A number of structures pass through the foramen.

A pair of spinal nerve roots leaves the dural sac just above the level of each intervertebral foramen. Anterior lower posterolateral aspect of a vertebral body and the intervertebral disc below in the thoracic and lumbar regions. In the lumbar region where nerve root compression is more common the nerves increase in size from above downwards whereas the. Cervical thoracic and lumbar vertebrae all have intervertebral foramina.

The word foramen is the singular form while foramina is the plural form. Roof inferior vertebral notch of the vertebra above. Roof and floor of neural foramen are formed by pedicles of adjacent vertebrae. 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. The intervertebral foramina allow passage of structures out of and into the vertebral canal.