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.
Causes of muscle spasms. A herniated disc can cause muscle spasms for two reasons: Inflammation â The nucleus pulposus contains enzymes that cause inflammation and, in turn, pain. The muscles sometimes spasm as the result of pain, further contributing to the patientâs discomfort.