bone screw assembly and the embedded instrument

摘要

Bone screw includes a screw head which is composed of a screw shaft extending longitudinally along the screw axis, so that it can be connected releasably to the surgical tool and extending from the proximal end of the screw shaft. A through hole extending through the screw head and defining a hole axis also includes a through-hole axis intersect at an acute angle a with the screw shaft, the through-hole, the bone screw is adapted to receive in a in a second screw and tapered toward the second end which is opened to the outer surface of the screw head from the first end of the proximal end of the screw head and the. [Selection] Figure Figure 1