Disc Protrusion

Lateral Disc Protrusion

A lateral disc protrusion is called so because it occurs at the side of the disc (lateral = on the side). It can be an intraforaminal or extraforaminal disc protrusion, or even both at the same time. Also, when a protrusion develops at both sides of the same disc, it is called bilateral protrusion.


Extraforaminal Disc Protrusion

As with many of the other types of disc protrusion, the medical term extraforaminal disc protrusion merely indicates the precise location of the disc bulge. Other than a foraminal, or intraforaminal disc protrusion, this one occurs outside the foramen (that’s the opening of the backbone were the spinal nerve passes).