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What are the intervertebral disks?

Gerald M. Silverman
Chiropractic Medicine
Your spine is held together by more than joints and ligaments. Each bone is attached to and at the same time separated from the one above and below by an intervertebral disc. The discs are cylindrical structures made up of a thick, multilayered outer ring called the annulus fibrosis and an inner cushioning jellylike substance called the nucleus pulposus. The outer ring has between ninety and a hundred layers, each composed of diagonally oriented collagen fibers arranged in alternating angles from the adjacent layer. These layers give the ring great strength and holding capacity, with a flexibility that allows you to bend and turn.
Your Miraculous Back: A Step-By-Step Guide to Relieving Neck & Back Pain

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Your Miraculous Back: A Step-By-Step Guide to Relieving Neck & Back Pain

Many of us complain about our 'bad back,' but this book argues that our backs are, without exception, amazing examples of bioengineering, capable of dramatic feats of strength, flexibility, and...
Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
The intervertebral disks or spinal disks are tough, flat pads made of cartilage with a gel center.  They lie between the vertebrae.  The animation shows their structure.



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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.