FACET FIXATION PROSTHESIS

A facet screw system for surgical implantation into bone tissue having a shaft, a compression member and a washer. The shaft includes a shaft having a bone engaging portion and a compression member engaging portion. The compression member includes a spherical head portion having a recess for engagin...

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Bibliographische Detailangaben
Hauptverfasser: Laskowitz Daniel, Karpowicz Edward, Cianfrani Jason
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:A facet screw system for surgical implantation into bone tissue having a shaft, a compression member and a washer. The shaft includes a shaft having a bone engaging portion and a compression member engaging portion. The compression member includes a spherical head portion having a recess for engaging with a driving instrument, and an elongated coupling portion having internal threads for coupling with the compression member engaging portion of the shaft and a washer coupled to the spherical head portion of the compression member and having a plurality of bone engaging protrusions. The washer is adapted to be polyaxially rotatable with respect to the compression member.