Patent ID: 7041137

Claim:
An implant for insertion into a space between a superior vertebra and an inferior vertebra, the implant comprising: a main body; a superior surface residing on the main body and an inferior surface residing on the main body opposite the superior surface; at least one sidewall about the main body connecting the superior surface and the inferior surface; an anterior region residing on the main body and a posterior region residing on the main body opposite the anterior region and connected by the at least one sidewall; a plurality of linear surface protrusions residing on at least one of the superior surface and the inferior surface, the linear surface protrusions comprising: an anterior facing surface, a posterior facing surface, a plurality of laterally facing surfaces, a substantially flat main body engaging surface, a substantially flat bone engaging surface opposite the main body engaging surface, and the anterior facing surface and the posterior facing surface converging between the substantially flat main body engaging surface to the substantially flat bone engaging surface and the plurality of laterally facing surfaces converging between the substantially flat main body engaging surface to the substantially flat bone engaging surface, such that the linear surface protrusion has a generally trapezoidal cross-section in both an anterior to posterior direction and a lateral direction.