Herniated nucleus pulposus (HNP), also referred to as a herniated disc, is a common spine pathology that occurs approximately 95% of the time at the L4-L5 or L5-S1 level (Fisher et al., 2004; Asch ...

It can lead to pain, numbness, and weakness in your back, legs, and arms. Often you can relieve a herniated disk with rest, pain relievers, and physical therapy. But if your symptoms don't get ...