Spinal fusion implant and related methods

A spinal fusion implant comprising:

• a body having a top surface, a bottom surface, and a fusion aperture defined by an anterior wall, a posterior wall, and first and second lateral side walls, wherein the anterior wall comprises a threaded aperture extending therethrough;
• a plurality of bone fasteners;
• a drive screw;
• and
• a substantially flat plate comprising an anterior surface and a posterior surface and configured to be coupled to the plurality of bone fasteners such that each of the bone fasteners extend from a posterior surface of the substantially flat plate, wherein the substantially flat plate includes an aperture extending from the anterior surface and exiting through the posterior surface configured to align with the threaded aperture of the anterior wall of the body and receive the drive screw therethrough, wherein the substantially flat plate has a height;
• wherein the anterior wall has an anterior wall height which is greater than a height of the posterior wall and at least as high as the height of the substantially flat plate, and the anterior wall includes a drive screw aperture configured to receive the drive screw and a plurality of bone fastener apertures, each of the bone fastener apertures extending through the anterior wall and into the fusion aperture, each of the bone fastener apertures configured to receive one of the bone fasteners therethrough.