Disc Protrusion

Posterolateral Disc Protrusion

The term posterolateral disc protrusion is another way to describe the location of the occurrence of a disc bulge in relation to the disc itself. In this case, posterolateral means that the disc protrudes between the side of the disc and the entrance of the intervertebral foramen (the opening where the spinal nerve passes).


Anterior Disc Protrusion

An anterior disc protrusion occurs when the inner part of the disc (the nucleus pulposus) bulges into the front part of the outer ring (the annulus fibrosus). This makes it the exact opposite of the posterior disc protrusion, where the disc wedges itself backwards. Anterior protrusions are not as common as posterior bulges and are […]