CPC A61F 2/4465 (2013.01) [A61F 2/30749 (2013.01); A61F 2/30771 (2013.01); A61F 2/447 (2013.01); A61F 2/4455 (2013.01); A61B 17/7059 (2013.01); A61F 2002/302 (2013.01); A61F 2002/3008 (2013.01); A61F 2002/30014 (2013.01); A61F 2002/30028 (2013.01); A61F 2002/3093 (2013.01); A61F 2002/3097 (2013.01); A61F 2002/30131 (2013.01); A61F 2002/30136 (2013.01); A61F 2002/30158 (2013.01); A61F 2002/30563 (2013.01); A61F 2002/30578 (2013.01); A61F 2002/30593 (2013.01); A61F 2002/30782 (2013.01); A61F 2002/30787 (2013.01); A61F 2002/30904 (2013.01); A61F 2002/30968 (2013.01); A61F 2220/0016 (2013.01); A61F 2310/00023 (2013.01); A61F 2310/00029 (2013.01); A61F 2310/00059 (2013.01); A61F 2310/00101 (2013.01); A61F 2310/00131 (2013.01); A61F 2310/00407 (2013.01)] | 19 Claims |
1. A dynamic intervertebral spacer comprising:
a monolithic spacer having an anterior portion, a posterior portion, a superior surface, an inferior surface, and an open center portion, wherein said monolithic spacer is configured to be implanted in a space between adjacent vertebral bodies with the superior surface engaging a superior vertebral body and the inferior surface engaging an inferior vertebral body;
wherein the spacer is split to provide motion in the anterior/posterior direction between a bone attachment portion of the superior surface and a bone attachment surface of the inferior surface of between 1 and 5 degrees;
wherein a portion of the spacer is configured to act as a torsion spring to allow the anterior/posterior motion;
wherein the open center portion is configured to receive bone graft; and
wherein inferior and superior surfaces are angled with respect to one another in order to restore lordosis.
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