Science today isn't the same as the science 2000 years ago was but some principles remain the same. The human knowledge constantly grows but with more knowledge there comes even more mysteries and unsolved questions, so science is always going forward.
Causes. The most common cause of a cervical herniated nucleus pulposus is gradual degeneration of the disc, attenuation (weakening) of the posterior annulus fibrosis, and subsequent protrusion of the nucleus pulposus into the spinal canal causing compression of the nerve root.
A herniated disc is ânon-contained,â which means a tear or rupture is present. A portion of the gel-like nucleus pulposus has leaked into the spinal canal. A herniated disc might have begun as a bulging disc, but created so much pressure on the outer wall of the disc that a rupture occurred.