A spinal disc herniation is an injury to the intervertebral disc between two spinal vertebrae, usually caused by excessive strain or trauma to the spine. It may result in back pain, pain or sensation in different parts of the body, and physical disability. The most conclusive diagnostic tool for disc herniation is MRI, and treatment may range from painkillers to surgery. Protection from disc herniation is best provided by core strength and an awareness of body mechanics including good posture.[1]
When a tear in the outer, fibrous ring of an intervertebral disc allows the soft, central portion to bulge out beyond the damaged outer rings, the disc is said to be herniated.
Disc herniation is frequently associated with age-related degeneration of the outer ring, known as the annulus fibrosus, but is normally triggered by trauma or straining by lifting or twisting.[2] Tears are almost always posterolateral (on the back sides) owing to relative narrowness of the posterior longitudinal ligament relative to the anterior longitudinal ligament.[3] A tear in the disc ring may result in the release of chemicals causing inflammation, which can result in severe pain even in the absence of nerve root compression.
Disc herniation is normally a further development of a previously existing disc protrusion, in which the outermost layers of the annulus fibrosus are still intact, but can bulge when the disc is under pressure. In contrast to a herniation, none of the central portion escapes beyond the outer layers. Most minor herniations heal within several weeks. Anti-inflammatory treatments for pain associated with disc herniation, protrusion, bulge, or disc tear are generally effective. Severe herniations may not heal of their own accord and may require surgery.
The condition may be referred to as a slipped disc, but this term is not accurate as the spinal discs are firmly attached between the vertebrae and cannot "slip" out of place.
^"Herniated disk". Mayo Clinic. Archived from the original on 8 October 2017. Retrieved 16 December 2022.
^"Backache from Occiput to Coccyx | Home Page". www.macdonaldpublishing.com. Archived from the original on 2019-03-16. Retrieved 2021-02-23.
^Moore, Keith L. (2018). Clinically oriented anatomy. A. M. R. Agur, Arthur F., II Dalley (8 ed.). Philadelphia. pp. 98–108. ISBN 978-1-4963-4721-3. OCLC 978362025. Archived from the original on 2021-03-01. Retrieved 2021-02-23.{{cite book}}: CS1 maint: location missing publisher (link)
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