Interbody implant with adjusting shims

An expandable implant movable between a collapsed position and an expanded position, comprising:

• a superior endplate including a first track having a first plurality of protrusions and a second track having a second plurality of protrusions disposed on an interior surface thereof, the first plurality of protrusions further comprises a first plurality of raised block structures and the first track further comprises a first plurality of apertures, and the second plurality of protrusions further comprises a second plurality of raised block structures and the second track further comprises a second plurality of apertures;
• an inferior endplate including a third track having a third plurality of protrusions and a fourth track having a fourth plurality of protrusions disposed on an interior surface thereof, the third plurality of protrusions further comprises a third plurality of raised block structures and the third track further comprises a third plurality of apertures, and the fourth plurality of protrusions further comprises a fourth plurality of raised block structures and the fourth track further comprises a fourth plurality of apertures;
• and
• a first shim having a superior bearing surface for directly contacting the first track between the first plurality of protrusions and supporting the superior endplate and an inferior bearing surface for directly contacting the third track between the third plurality of protrusions and supporting the inferior endplate,
• a second shim having a superior bearing surface for directly contacting the second track between the second plurality of protrusions and supporting the superior endplate and an inferior bearing surface for directly contacting the fourth track between the fourth plurality of protrusions and supporting the inferior endplate,
• wherein, in a collapsed position, the first track is aligned with the third track and the second track is aligned with the fourth track, and the first plurality of raised block structures extends through the third plurality of apertures and the second plurality of raised block structures extends through the fourth plurality of apertures,
• wherein, in an expanded position, the first shim is disposed within the first track and third track and the second shim is disposed within the second track and fourth track,
• wherein the first and second shims define a spacing and an angle of inclination between the superior endplate and the inferior endplate,
• wherein, in a side view, the superior bearing surface of the first shim and the inferior bearing surface of the first shim form a first acute angle,
• wherein, in a side view, the superior bearing surface of the second shim and the inferior bearing surface of the second shim for a second acute angle, and
• wherein the first acute angle and the second acute angle together define the angle of inclination between the superior endplate and the inferior endplate.

An expandable implant movable between a collapsed position and an expanded position, comprising:

• a superior endplate including a first track on an interior surface thereof, the first track including a first plurality of protrusions;
• an inferior endplate including a second track on an interior surface thereof, the second track including a second plurality of protrusions;
• and
• a shim having a superior bearing surface for directly contacting the first track between the first plurality of protrusions and supporting the superior endplate, and an inferior bearing surface for directly contacting the second track between the second plurality of protrusions and supporting the inferior endplate,
• wherein the shim further comprises a blunt nose portion with chamfered ends and a superior eyelet opposite the blunt nose portion,
• wherein, in a collapsed position, the first track is aligned with the second track,
• wherein, in an expanded position, the first shim defines a spacing and angle of inclination between the superior endplate and the inferior endplate, and
• wherein, in a side view, the superior bearing surface and inferior bearing surface form an acute angle defining the angle of inclination between the superior endplate and the inferior endplate.