Intervertebral cage, has line arranged perpendicular to axis of stem of screw to plane of two branches, two bearing surfaces and spacing subjected to non-slip treatment e.g. shot-blasting treatment

摘要

The cage has a U-shaped body (10) including two branches (11, 12) and a base (13). A set of cavities (16, 17) is formed, where distance separating two parallel free sides (16-1, 17-1) from the set of cavities is lower than width of a part of a spacing (30) with regard to a line (D). The line is arranged perpendicular to an axis (23) of a stem of a screw (22) to a plane of the branches, two bearing surfaces (14, 15) and the spacing subjected to a non-slip treatment e.g. shot-blasting treatment.