The present invention relates to a bone-fixing device including a screw that is provided with a head portion having a receiving groove and a screw portion extending downward from the head portion, a side wall with a spherical outer circumferential surface that has a wide upper side portion and a narrow lower end portion, and a bone-fixing plate that is open upward and downward, has an inner circumferential surface matching the outer circumferential surface of the side wall, has a wide upper side portion, has a narrow lower end portion, and has a plurality of spherical locking holes. The screw and a bearing ring are fastened to each other with a gap. The outer diameter of the bearing ring is reduced or an elastic restoration is performed in the locking hole during insertion into the locking hole in a state where the bearing ring is fastened to the screw, and thus rotatable locking in the locking hole is allowed. In the bone-fixing device, a wire locking device has a narrow upper end portion and a wide lower end portion. When the upper end portion is turned with a monkey spanner, locking is made available without any extra wire locking device. During a procedure for removal, the bone-fixing device can be easily removed by wire and screw removal alone. Accordingly, the plate, which has an accurate osteologic shape and is shaped to be capable of applying pressure even to a bottom end portion, is attached and the screw is used at the same time in a case where a pressing force is unavailable with the wire alone, and thus the pressure on a fracture section can be increased and recuperative power for fracture can be increased. Also, a fracture part where no screw can be used can be reliably and simply fixed, and thus compound fracture or fracture of a part where a metallic insert is inserted into a marrow can be facilitated during fracture union.COPYRIGHT KIPO 2015본 발명의 골고정용 장치는, 안착홈이 형성된 헤드부 및 헤드부의 하부로 연장되는 나사부를 구비한 나사못과, 상측부가 넓고 하단부가 좁은 구형으로 된 외주면을 갖는 측벽, 상하로 개구되고 내주면이 상기
