One Cause Of Sciatica

Posted on July 15, 2008
Filed Under Causes of Lower Back Pain |

According to dictionary.com, one cause of sciatica is a spinal disc herniation, pressing on one of the sciatic nerve roots. The spinal discs are composed of a tough spongiform ring of cartilage (annulus fibrosus) with a more malleable core (nucleus pulposis). The discs separate the vertebrae, thereby letting room for the nerve roots to properly exit through the spaces between the L4, L5, and sacral vertebrae. The discs cushion the spine from compressive forces or pressure, but are weak to pressure applied during rotational movements. That is why a person who bends to one side, at a bad angle, to pick up a piece of paper may more likely herniate a spinal disc than a person falling from a particular height and landing on his back.

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