With the fixed screw (13), because it locks the fixed component on the surface which has the constitution component, at the same time selective, the fixed component in the fixed assembly body because the constitution component is locked in the 2nd constitution component and in order to fit mutually, it has the fixed assembly body and male type or the mold positioning feature section (15) which is fit mutually for a certain aspect, for example, the constitution component which is the ball and the socket joint of the artificial organ like the ilium mortar cup (11) of the artificial organ joint.固定ねじ(13)によって、固定部材を構成部材のある面に固定するため、且つ選択的に、構成部材を第2の構成部材に固定するための固定組立体における固定部材と相互に嵌合するために、ある面に固定組立体と相互に嵌合する雄型又は雌型位置決め特徴部(15)を備えている、例えば、人工器官接合部の寛骨臼カップ(11)のような人工器官のボール及びソケット接合部である構成部材。