ANTERIOR INTERVERTEBRAL SPINAL FIXATION AND FUSION

摘要

A spinal fixation and fusion device that includes a housing with leading deep surface conforming to the posterior aspect of the intervertebral disk and trailing outer surface conforming to the anterior surface of the disk, weight bearing sides and the top and bottom surfaces with plurality of openings enabling ingrowths of bone. The device further includes a shaft running from the center of the deep surface and perpendicular to the deep surface of the housing to the center of the outer surface of the housing and affixed at least to the deep surface of the housing, and a flat metal member threaded onto the shaft with sharp leading edge which upon clockwise or counterclockwise rotation about the axis of the shaft will break the endplate, hook into the vertebra and rigidly secure the vertebra to the entire device preventing separation of the vertebra from the device during spinal motion.