Bone screw and tool for use therewith

A bone screw, comprising:

• a shank portion having at least one helically shaped thread on an exterior surface thereof, wherein the thread extends from adjacent a proximal end of the shank portion to adjacent a distal end of the shank portion, wherein the shank portion includes a cannulation passage extending longitudinally therethrough, wherein the cannulation passage defines an interior surface of the shank portion, wherein the shank portion includes at least one bone material aperture therein extending between the exterior surface of the shank portion and the interior surface of the shank portion such that an aperture sidewall is defined between the exterior surface of the shank portion and the interior surface of the shank portion and wherein one or more leading edge faces of the at least one thread is reclined with respect to the aperture sidewall;
• a head portion attached to the shank portion at the proximal end thereof, wherein the head portion includes a tool interface structure therein, wherein the tool interface structure includes a closed end portion, an open end portion and sidewalls extending therebetween, wherein the tool interface structure includes a tool lock enabling feature provided in at least one of the sidewalls thereof and wherein the cannulation passage is exposed at the closed end portion of the tool interface structure;
• and
• a cap moveably attached to the head portion, wherein the tool interface structure is accessible through an opening within an exterior surface of the cap.