What is extra Foraminal disc protrusion?
Abstract. Disk herniation lateral to the intervertebral foramen is defined as extraforaminal. Its particular anatomical site makes its clinical and neurologic features completely different from those of posteromedial and posterolateral disk herniations.
What is a Foraminal disc extrusion?
Disc extrusion is considered when the intervertebral disc has a broader dome than a neck. Foraminal extension is a rare form of intervertebral disc herniation. The patient’s symptoms correspond to the compressed nerve root at its exit foramen level. The commonest level of occurrence in the cervical spine is at C6/7.
What is a Foraminal disc bulge?
For example, one cause of foraminal stenosis is a bulging or herniated disk. These cushioning disks between your spinal bones can slip out of place or become damaged. The bulging disk presses on the foramen and nerve root. This is most likely to happen in your lower back.
Will a herniated disc show on a MRI?
Can MRI detect herniated disc? Yes, an MRI scan is typically used to confirm a herniated disc diagnosis. It is used to locate exactly the point on the spine that shows herniation. This way, treatment, which in some cases may involve surgery, may be better managed to optimize patient recovery.
What does no significant spinal canal or neural foraminal stenosis mean?
Neural foraminal stenosis refers to the narrowing of the small openings between each vertebra in the spine, called foramen, which nerve roots pass through. A type of spinal stenosis, neural foraminal stenosis, does not always cause symptoms. But if a nerve gets compressed in the gap, this will be painful.
Where is the Foraminal disc?
Foraminal narrowing is a specific type of spinal stenosis, a back condition that occurs when the open spaces within the spine narrow. The foramina are bony passageways located between the vertebrae in the spine.
How to tell if a lumbar disc herniation is a nerve root?
Notice that at the L4L5 level the migrated disc simulates a nerve root (green arrow), while in fact the nerve is compressed posteriorly and subsequently moves to the foramen (yellow arrow). Stenosis of the lateral recess is a common problem especially in older patients. The stability of the vertebral column decreases, which results in instability.
Where does the herniation of the lumbar disc migrate?
Notice how the disc herniation at the L3L4 level migrates caudally behind the body of L4. Notice that at the L4L5 level the migrated disc simulates a nerve root (green arrow), while in fact the nerve is compressed posteriorly and subsequently moves to the foramen (yellow arrow).
Where does narrowing of the foramen of the spine occur?
Foramen. This is the area between two pedicles, where the nerve leaves the spinal canal. Narrowing of the foramen is seen in facet arthrosis, spondylolisthesis and foraminal disc herniation – usually a migrated disc from a lower level.
Can a herniated disc cause nerve compression at the nerve level?
Nerve compression in this area is uncommon, but is sometimes caused by a laterally herniated disc. At these four levels there can be a lot of overlap of pathology. For instance a herniated disc can cause nerve compression at the level of the disc, but also at the level of the foramen or extra-foraminal when there is migration of the disc.