A bone screw and a method for using same, the bone screw comprising an elongated shaft including a proximal end, a distal end, a leading portion, and intermediate portion and a trailing portion, the elongated shaft defining a longitudinal axis； a cannula bored completely through said elongated shaft extending from said distal end to said proximal end, the cannula aligned with said longitudinal axis； the leading portion having at least one thread； the intermediate portion being unthreaded； and the trailing portion comprising a threaded tapered head adapted engage a threaded hole at a selectable angle.
