Importance

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Abstract

A lumbar spine fixation system which includes two spaced lumbar rods extending upwardly from the sacrum on each side of the lumbar spine. The upper ends of the lumbar rods are affixed to the spine by the use of pedicle screws. In the practice of the present invention, fixation of the lower ends of the rods is achieved by mounting an offset hook onto the lower end of each rod. The hook is configured to extend to the alar portion of the sacrum which is laterally placed from the sacral facet. The offset sacral hooks allow for the placement of the rods toward the midline and protect the laminar area of the spine which is frequently removed in a laminectomy. The sacral hooks can be further stabilized with a screw which goes from the sacral hook out laterally into the thick portion of the sacrum. This provides for further compression fixation of the sacral hook. A gear nut system is provided to facilitate the fixation of the screw holder and sacral hook.

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First Claim