Conically shaped anterior fusion cage and method of implantation
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United States of America Patent
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May 25, 1999
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app pub date -
Jan 15, 1997
filing date -
Sep 15, 1994
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Abstract
A fusion cage for vertebral body fusion is conically-shaped. A thread is formed as part of the external conical surface of the fusion cage. Apertures are defined through the fusion cage in order to provide for contact between the engaged vertebral bone structures and bone growth inducing substances packed within the fusion cage. The fusion cage is introduced and maintains or increases the lordosis between adjacent vertebral bone structures.
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