Patent ID: 8016887

Claim:
In combination, an implant capable of implantation into a surgically created cavity between a superior vertebra and an inferior vertebra and an overlay capable of covering said implant: I) said implant, comprising: a) a series of dividers; b) a first corner post contacting first inward corners of said series; c) a second corner post contacting second inward corners of said series; d) a third corner post contacting first outward corners of said series; and e) a fourth corner post contacting second outward corners of said series; and II) said overlay, capable of covering said implant, comprising: a) an outward generally smooth surface; b) an inward surface opposite said outward generally smooth surface, wherein said inward surface comprises indentations for interlocking with outward edges of said series, said third corner post and said fourth corner post; c) sidewalls extending between said outward generally smooth surface and said inward surface; and d) one or more apertures extending through said overlay, wherein said one or more apertures are proximate to one or more margins of said overlay.