Herniated nucleus pulposus (HNP), also referred to as a herniated ... Although most recover without surgery, patients with large midline lumbar HNPs may suffer significant neurological impairment.

Lumbar herniated nucleus pulposus (HNP) and lumbar spinal stenosis (LSS) are common spine pathologies with different clinical presentations and interventions. HNP generally has an acute onset ...

allowing the inner nucleus pulposus material to leak out." This is what a herniated disc is, and the pain and impeded movement associated with one is caused by this rupture changing the shape or ...