Patent ID: 8870961

Claim:
A spinal implant comprising: a body having an upper surface, a lower surface, an anterior portion, a posterior portion, curved sidewalls, and a central opening extending between the upper and lower surfaces, the curved sidewalls intersecting with the proximal portion at rounded posterolateral corners with the body being widest between the posterolateral corners, the curved sidewalls and anterior portion together forming a rounded, convex curvature such that the body has an overall D-shape for midline insertion between vertebral bodies of a patient's spine; and one or more apertures within the anterior portion of the body for receiving at least one fixation element, the one or more apertures comprising a first aperture centrally located at the anterior portion and a pair of second apertures laterally located at the anterior portion, each of the apertures having a countersink therein and an opening with an angular range of about 7 to about 17 degrees; wherein the apertures are configured to permit a predetermined amount of nutation by the fixation elements.