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.
By Michael Perry, M.D. A herniated nucleus pulposus (HNP) causes many patients to experience aches and pains in the neck and back. This spinal condition occurs when the jellylike center (nucleus pulposus) of an intervertebral disc seeps through a tear in the tough exterior (annulus fibrosus) and into the spinal column. While there are several factors that can lead to developing a herniated disc, there are two main causes: