| CPC A61F 2/4425 (2013.01) [A61B 17/7097 (2013.01); A61F 2/442 (2013.01); A61F 2/4455 (2013.01); A61F 2/447 (2013.01); A61F 2/4611 (2013.01); A61F 2002/2835 (2013.01); A61F 2002/30108 (2013.01); A61F 2002/30143 (2013.01); A61F 2002/30156 (2013.01); A61F 2002/30159 (2013.01); A61F 2002/30166 (2013.01); A61F 2002/30176 (2013.01); A61F 2002/30189 (2013.01); A61F 2002/30266 (2013.01); A61F 2002/30364 (2013.01); A61F 2002/30365 (2013.01); A61F 2002/3037 (2013.01); A61F 2002/30405 (2013.01); A61F 2002/30433 (2013.01); A61F 2002/30462 (2013.01); A61F 2002/30471 (2013.01); A61F 2002/30484 (2013.01); A61F 2002/30492 (2013.01); A61F 2002/305 (2013.01); A61F 2002/30507 (2013.01); A61F 2002/30515 (2013.01); A61F 2002/30518 (2013.01); A61F 2002/30525 (2013.01); A61F 2002/3054 (2013.01); A61F 2002/30545 (2013.01); A61F 2002/3055 (2013.01); A61F 2002/30579 (2013.01); A61F 2002/30581 (2013.01); A61F 2002/30588 (2013.01); A61F 2002/30593 (2013.01); A61F 2002/30624 (2013.01); A61F 2002/30772 (2013.01); A61F 2002/30836 (2013.01); A61F 2002/30892 (2013.01); A61F 2002/30904 (2013.01); A61F 2/44 (2013.01); A61F 2002/4415 (2013.01); A61F 2002/4627 (2013.01); A61F 2002/4677 (2013.01); A61F 2310/00017 (2013.01); A61F 2310/00023 (2013.01); A61F 2310/00179 (2013.01)] | 15 Claims |

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1. An expandable interbody spacer system comprising:
a first jointed arm comprising a first plurality of links coupled end to end;
a second jointed arm comprising a second plurality of links coupled end to end;
an elongate screw having a head portion positioned outside of the first and second jointed arms and an elongate body, the head portion having a proximal end, a distal end, and a curved outer surface in between the proximal end and the distal end; and
an insertion tool for inserting the expandable interbody spacer into an intervertebral space and having first and second tool arms configured to engage a groove disposed around the curved outer surface of the head portion to secure the insertion instrument to the expandable interbody spacer,
wherein the first jointed arm and the second jointed arm are interconnected at a proximal end of the expandable interbody spacer,
wherein the first jointed arm and the second jointed arm are interconnected at a distal end of the expandable interbody spacer, and
wherein the first jointed arm and the second jointed arm are each configured to move in opposite directions to place the expandable interbody spacer in an expanded position.
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