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Intervertebral Disc Disease (IDD)

What is an Intervertebral Disc?


The intervertebral disc is made of cartilage surrounded by a ring of fibrous tissue that acts as a cushion between the individual vertebrae that surround the spinal cord. There are intervertebral discs between all but the first two vertebrae. Intervertebral discs help provide flexibility of the spine and, in bipeds (species which walk on 2 legs), they help buffer the load to the spine during running or jumping. The disc is made up of 2 parts, an outer fibrous annulus fibrosus and a gelatinous center called the nucleus pulposus.