Transpedicular vertebral attachment systems and device for the practice thereof
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United States of America Patent
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Dec 14, 1999
Issued Date -
N/A
app pub date -
Nov 14, 1997
filing date -
Dec 8, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In transpedicular vertebral attachment systems and a device for the practice thereof a screw is provided. The screw is much shorter than a traditional screw and engages a plug of silastic or any other polymer having equivalent mechanical properties and biocompatibility, such as a metal or metal alloy. The plug is inserted in the pedicle, extending only slightly beyond the length thereof. The system is applicable to osteoporotic patients in whom the density of the bone tissue of the vertebral body is much lower, and in general in all lesions of the backbone in which instrumented vertebral fusion is indicated.
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