Endplate-preserving spinal implant with an integration plate having durable connectors

An interbody spinal implant, comprising

• a body comprising a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, and a single vertical aperture extending from the top surface to the bottom surface, having a size and shape for maximizing the surface area of the top surface and the bottom surface available proximate the anterior and posterior portions, defining a transverse rim with a varying width or thickness, and having a maximum width at its center, wherein at least a portion of the top surface of the body, and optionally the bottom surface of the body, is recessed and comprises a plurality of holes having one or more tongue structures for engaging complementary grooves on a post of an integration plate;
• and
• at least one integration plate comprising a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, and a single vertical aperture extending from the top surface to the bottom surface and aligning with the single vertical aperture of the body, defining a transverse rim with a varying width or thickness, and having a maximum width at its center, wherein the top surface of the integration plate comprises a roughened surface topography adapted to grip bone and inhibit migration of the implant, and the bottom surface of the integration plate comprises a plurality posts having one or more grooves into which the one or more tongue structures are inserted, thereby affixing the integration plate to the body.