MEDICAL-LEGAL FAX MONTHLY
Academy of Chiropractic
Personal Injury & Primary Spine Care Program
Trauma Series #6
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Herniation of the nucleus pulposus (HNP) through an annular defect causes focal protrusion of disk material beyond the margins of the adjacent vertebral end plate. (Any directional displacement of the disc is a herniation).
In layman's terms, a disc herniation occurs when the inside of the intervertebral disc (nucleus pulpous) tears its way through the outer portion of the disc (annulus fibrosis) and into the space where the delicate neural structures reside. This can only be caused from trauma.