Adjustable retrograde intramedullary nail positioning split trephine

An adjustable retrograde intramedullary nail positioning split trephine comprises a drill pipe, an inner core is detachably arranged in the drill pipe, sawteeth are arranged at one end of the drill pipe, the other end of the drill pipe is fixedly connected with a handle, and a plurality of guide holes are formed in the inner core. According to the utility model, the extrusion effect is not generated in the annular sawing process, the reduction loss of the femoral intercondylar fracture is not caused, and the adaptation disease of the retrograde intramedullary nail can be expanded to AO/OTA C3 type distal femoral fracture. 一种可调式逆行髓内钉定位开口环锯，包括钻管，钻管内可分离式设置有内芯，钻管一端设有锯齿、另外一端固定连接有把手，在内芯上开设有多个导向孔。本实用新型在环形锯开的过程中不产生挤压效应，不会造成股骨髁间骨折复位的丢失，可将逆行髓内钉的适应症扩大至AO/OTA C3型股骨远端骨折。