OSTEOSYNTHESIS DEVICE FOR PROXIMAL FEMUR FRACTURE AND MASTER SCREW TYPE SCREW DEVICE FOR OSTEOSYNTHESIS DEVICE FOR PROXIMAL FEMUR FRACTURE

摘要

According to an embodiment of the present invention, there is provided a structure in which a nail and a lag screw set are assembled and mounted by screw insertion, wherein a lag screw is assembled and mounted together with a key ring and a fastening nut in advance, Since the grip bar is radially inserted in a predetermined angle and direction, strong gripping force can be obtained, and in the final step, a screw thread is forcedly engaged by the tightening margin of the threads of the lug screw and tightening nut, Therefore, it is a bone joining device for a proximal femur fracture having a stable and high bone holding power without loosening.