- has a broader dome (B) than neck (A),
- extends above or below the disc level (into the suprapedicular or infrapedicular zone)
Extrusion can be in any axial direction and may migrate either superiorly or inferiorly. If the extrusion migrates but becomes separated from the rest of the herniation it is known as a intervertebral disc sequestration.
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Intervertebral disc extrusion||✗|