Patent ID: 8043377

Claim:
An implantable intervertebral device, comprising: a bone body substantially conforming in size and shape with the endplates of adjacent vertebrae wherein, the bone body comprises a top surface and a bottom surface and wherein each of said top and bottom surface comprises a plurality of macro-structures extending from a first end of said bone body to a second end of said bone body, each of said macro-structures having a first footing with a height, a second footing with a height relative to the top surface of the bone body or bottom surface of the bone body, and a groove that defines a space between said first footing and said second footing, wherein the height of the first footing is greater than the height of the second footing and the first footing has a tip defined by an angle in a range of 15 degrees to 65 degrees and wherein the second footing of each macro-structure on said top surface of the bone body has a substantially flat top surface relative to the top surface of the bone body.