Interbody spacer and bone plate assembly

A system for stabilizing a joint between a superior vertebra and an inferior vertebra, the system comprising:

• an implant comprising:
• a plate member comprising:
• an anterior end plate comprising an anterior surface and a posterior surface;
• at least one superior fastener aperture formed in the anterior end plate;
• and
• at least one inferior fastener aperture formed in the anterior end plate;
• and
• an interbody spacer comprising:
• a posterior end;
• an anterior end configured to engage the posterior surface of the anterior end plate;
• a superior bone-facing surface extending between the anterior end and the posterior end of the interbody spacer;
• and
• an inferior bone-facing surface extending between the anterior end and the posterior end of the interbody spacer;
• a superior fastener sized to be received in the superior fastener aperture and in a first interior space of the interbody spacer, and anchored in the superior vertebra;
• and
• an inferior fastener sized to be received in the inferior fastener aperture and in a second interior space of the interbody spacer, and anchored in the inferior vertebra;
• an inserter comprising:
• a head configured to removably engage the implant;
• a superior channel configured to receive the superior fastener and maintain the superior fastener in alignment with the superior fastener aperture;
• and
• an inferior channel configured to receive the inferior fastener and maintain the inferior fastener in alignment with the inferior fastener aperture;
• wherein the superior fastener and/or the inferior fastener comprises a spike comprising:
• a proximal end;
• a distal end;
• and
• a shank extending longitudinally along a curved path between the proximal end and the distal end.

A system for stabilizing a joint between a superior vertebra and an inferior vertebra, the system comprising:

• an implant comprising:
• an anterior end;
• a posterior end;
• a superior fastener aperture formed in the anterior end;
• and
• an inferior fastener aperture formed in the anterior end;
• a superior bone-facing surface extending between the anterior end and the posterior end;
• and
• an inferior bone-facing surface extending between the anterior end and the posterior end;
• a superior fastener sized to be received in the superior fastener aperture and in a first interior space of the implant, and anchored in the superior vertebra;
• and
• an inferior fastener sized to be received in the inferior fastener aperture and in a second interior space of the implant, and anchored in the inferior vertebra;
• wherein the superior fastener and/or the inferior fastener comprises a spike comprising:
• a proximal end;
• a distal end;
• and
• a shank extending longitudinally between the proximal end and the distal end, the shank comprising:
• a convex side extending along a proximal-distal length of the shank;
• and
• a concave side extending along the proximal-distal length, the concave side having a concave surface;
• wherein the proximal end defines a shoulder that is enlarged relative to the shank;
• wherein the shoulder is configured to lodge within one of the first interior space and the second interior space as the spike is anchored in one of the superior vertebra and the inferior vertebra;
• wherein the concave side comprises a plurality of bone-engagement members, extending from the concave surface, that extend away from a longitudinal center of the shank toward the proximal end such that the bone engagement members set themselves in the superior vertebra or the inferior vertebra in a barb-like manner in response to force tending to urge the spike to pull out of the superior vertebra or the inferior vertebra;
• wherein the shoulder extends for a first distance along the concave surface and a second distance, greater than the first distance, along the convex surface.

A system for stabilizing a joint between a superior vertebra and an inferior vertebra, the system comprising:

• an implant comprising:
• an anterior end;
• a posterior end;
• a superior fastener aperture formed in the anterior end;
• and an inferior fastener aperture formed in the anterior end;
• a superior bone-facing surface extending between the anterior end and the posterior end;
• and an inferior bone-facing surface extending between the anterior end and the posterior end;
• a driver comprising a driver distal end;
• and a superior fastener sized to be received in the superior fastener aperture and in a first interior space of the implant, and anchored in the superior vertebra;
• and an inferior fastener sized to be received in the inferior fastener aperture and in a second interior space of the implant, and anchored in the inferior vertebra;
• wherein the superior fastener and/or the inferior fastener comprises a spike comprising:
• a proximal end;
• a distal end;
• and a shank extending longitudinally between the proximal end and the distal end, the shank comprising:
• a convex side extending along a proximal-distal length of the shank, the convex side having a smooth, continuous shape from the proximal end to the distal end;
• and a concave side extending along the proximal-distal length;
• wherein the proximal end defines a shoulder that is enlarged relative to the shank, the shoulder comprising a non-circular cross-sectional shape configured to lodge within one of the first interior space and the second interior space as the spike is anchored in one of the superior vertebra and the inferior vertebra;
• wherein the shoulder is configured to receive impact from the driver distal end to drive the spike into one of the superior vertebra and the inferior vertebra.