Intervertebral implant with integrated fixation

摘要

A system for spinal surgery includes a prosthesis comprising a plurality of bone anchors which engage an intervertebral construct for fusion or motion preservation. The fusion construct comprises a spacer optionally encircled by a jacket. The motion preservation construct may comprise an articulating disc assembly or an elastomeric disc assembly. Any of the constructs may occupy the intervertebral disc space between adjacent vertebrae after removal of an intervertebral disc. The anchors slidingly engage the construct to securely fix the prosthesis to the vertebrae. The anchors and jacket of the fusion construct provide a continuous load path across opposite sides of the prosthesis so as to resist antagonistic motions of the spine.

主权项

1. A bone anchor, comprising:
an interconnection portion to slidingly engage a prosthesis; a fixation portion spaced apart from the interconnection portion to fix the anchor to a bone; and a leg connecting the fixation portion to the interconnection portion, the leg including a cutting edge capable of cutting through bone.