TERMINOLOGY FOR DESCRIBING THE LOCATION OF DEGENERATIVE DISC PATHOLOGY

Central
Overlying the posterior longitudinal ligament. Protrusion tends to be either side of this. Central protrusions are more common in the cervical spine, especially at C6-7 and C5-6.
Paracentral/lateral recess
This is the most common site for disc protrusion.
Foraminal
Disc material is present in the intervertebral foramen with inevitable compromise of the exiting nerve root/dorsal root ganglion. Up to 10% of herniations affect the foraminal zone.
Extra-foraminal
External to the neural exit foramen. This is an unusual site for protrusion.



 

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