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A disc is a lot like a jelly donut. It is composed of a fibrous cartilage covering called the annulus fibrosus and a jelly center called the nucleus pulposus. When a disc "slips", "herniates", or extrusion occurs, the nucleus breaks through the walls of the annulus fibrosus. Think of it as the jelly coming out of the donut.
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What is a Herniated Disc (Disc Herniation)?
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