PATHOGENESIS
HNP or herniation of intervertebral discs, which are often referred to as the Lumbar Disc Syndrome or lumbosacral radiculopathies is a common cause of lower back pain acute, chronic or recurrent. Protrusion, rupture, shifting is a term used in the disc nucleus which is pushed out. If the nucleus under pressure, while the nucleus is between two endplate of the vertebral body is confronted and surrounded by the annulus fibrosus pressure causes the nucleus pushed out, called the nucleus pulposus hernia.