The lower weight bearing of power effect that there is longitudinal grooved hip screw to carry out effective compression fracture and still allow for sliding compression to be broken so far the compression for support bone anchoring device； Including on hollow cylindrical shaft and threaded portion, at its proximal end with four equally spaced longitudinal slots in its lower end, there are three between the equal end apart from angling hole for tool, it can be inserted by three lines, three ' elasticity ' proximally curved line, welding, bonding or the distal side of curling can be plugged into hip collectively referenced as ' three wires '； Proximal end has to be turned outside conducting wire, all three conducting wires are equidistant； Three wires are being pushed to enter hip screw, conducting wire passes through the inclined borehole and hip screw and three protrusions of offer are equidistant； Improve rotational stabilization fractured near end fragment.
