Herniated nucleus pulposus (HNP), also referred to as a herniated disc, is a common spine pathology ... patients with large midline lumbar HNPs may suffer significant neurological impairment.

Sleep becomes difficult as well, since tossing and turning can be frequently accompanied by lower back ... the inner nucleus pulposus material to leak out." This is what a herniated disc is ...

Degenerative disc disease is one of today's ... this destructive disease of the spine routinely provokes low back pain, the leading cause of disability in people under age 45 in the United States.