Ashley Goordeen MD
Below is a brief discussion regarding the anatomy, function intervertebral disc and what a disc herniation is:
Components of the Intervertebral Disc
The intervertebral disc has three main components:
1) The intervertebral disc is composed of an endplate which is a layer of cartilage that covers the central parts of the superior and inferior vertebral bodies. Endplates are responsible for perfusion between vertebral capillaries and disc cells, and uniform transfer of load to the disc.
2) The nucleus pulposus represents a matrix of cells and water that distribute load within the disc during movement and static positions.
3) The annulus fibrosus represents densely packed collagen located around the nucleus pulposus. The purposed of the annulus is to distribute pressures placed on the disc while protecting the nucleus.
Function of the Intervertebral Disc
Intervertebral discs are responsible for stability during load bearing positions, balancing stresses exerted on the spine during movement and providing a stable matrix for numerous cellular processes.
Intervertebral Disc Herniation
Disc herniation is a term describing localized displacement of disc material beyond the limits of intervertebral disc space. (Disc material may be nuclear tissue, cartilage, annular tissue or apophyseal bone fragment or any combination thereof). Categories of disc herniations include: broad-based, focal, extrusion, and protrusion. These categories are defined by amount and shape of displaced disc material displaced in comparison to the circumference of the disc. Terms such as paracentral, lateral and far lateral are further descriptions of disc herniations that clinicians may use to describe the location of the disc herniation.
A disc herniation alters the discs ability to maintain cellular balance within, bear truncal load effectively and may release inflammatory enzymes that lead to nerve pain and dysfunction.
Questions on how to maintain a healthy spine, rehabilitate and treat the back pain from disc herniations should be discussed with your health care provider. Get in touch with Mana Spine today to learn more.