It is possible to prevent the fact that strange feeling after the healing occurs in main person of the patient who is healed after the healing configuration is difficult to change, the bone connector which can prevent the fact that the restriction which originally differs to the operational area of the elbow joint the pulley which originates in configuration changing depending upon the deformation of glenoid surface form of the mark ardently occurs is offered. As for the bone connector (A), the medullary nail which can pass into the medulla of the ulna the spike which can raise to the outside of the elbow head side (1) and the ulna (21) the washer for fixing which it possesses (2) and the tip fixed screw the base fixed screw (3) and the respective necessary number (4) and it has the auxiliary screw (5). In the medullary nail (1), it is provided in the basic destal and the base fixed screw (3) the screwhole which spiral shellfish arrival it is possible (11) with, it is provided on tip side and length direction is penetrated completely to the direction which is crossed for ahead fixed screw it passes and the hole (12) is formed. The washer for fixing it passes through the base fixed screw (3) for base fixed screw which it passes to (2) and the hole (22) with, it passes through the auxiliary screw (5) for auxiliary screw which it passes and the hole (23) is formed.施術された患者本人に施術後の違和感が生じることを防止することができ、施術後に形態が変化しにくく、形態が変わることに起因する滑車切痕の関節面形状の変形により肘関節の可動域に本来とは異なる制限が生じることを防止できる骨接合具を提供する。骨接合具(A)は、尺骨の髄内に通すことができる髄内釘(1)と、尺骨の肘頭側の外面に立てることができるスパイク(21)を有する固定用座金(2)と、基部固定ネジ(3)及びそれぞれ所要数の先部固定ネジ(4)と補助ネジ(5)を備えている。髄内釘(1)には、基端部に設けられ基部固定ネジ(3)が螺着できるネジ孔(11)と、先部側に設けられ長さ方向と交差する方向に貫通した先部固定ネジ用通し孔(12)が形成されている。固定用座金(2)には基部固定ネジ(3)を通す基部固定ネジ用通し孔(22)と、補助ネジ(5)を通す補助ネジ用通し孔(23)が形成されている。
