As for this invention, desirably crookedness and/or with the overcoat surface which curves and possessing the screw thread (31,32,33,34), as for the screw thread cutting blade (40,41,42,43) where is divided as for tooth cross section of the particular screw thread, you screw in the territory where it is arranged on the particular overcoat surface in regard to the self cutting type screwing in insertion body which possesses, way it leaves from the hypothetical axis of the insertion body, desirably for example you screw in the extending being present and the screw thread, almost vertically vis-a-vis the particular axis and by at least two flutes (35,36,37,38), of the possible artificial crotch joint ilium mortar socket is formed with the flute and the screw herringbone, the screw herringboneOn the one hand or we have slipped alternately on other Frank, for the fixed change in the direction of the flute, it projects desirably from form of the line of the screw thread rib. In order you screw in the design of this type and, you screw in without exerting disadvantageous influence on other character of the insertion body and to improve behavior and tightening too much behavior substantially, it is profitable for the use of specification.本発明は、好ましくは屈曲および/または湾曲した外套面と、ねじ山(31,32,33,34)を有して当該外套面上に配置された領域とを有する自己切削型ねじ込み挿入体に関し、当該ねじ山の歯断面形状は、ねじ込み挿入体の仮想軸から離れるように、好ましくは当該軸に対してほぼ垂直に延在し、ねじ山は、たとえばねじ込み可能な人工股関節寛骨臼ソケットの少なくとも2つのフルート(35,36,37,38)によって分割されており、フルートとねじ山歯との間に形成されるねじ山切刃(40,41,42,43)は、ねじ山歯の一方または他方のフランク上に交互にずれており、フルートの方向における一定の変化のために、好ましくはねじ山リブの線の形状から突出する。この種類の設計は、ねじ込み挿入体の他の性質に不利な影響を及ぼすことなくねじ込み挙動および締め過ぎ挙動を大幅に向上させるため、特定の用途にとって有利である。
