Screw used for fixing lower tibiofibular joint and screwdriver

The utility model relates to the field of auxiliary treatment through medical instruments, in particular to a screw used for fixing the lower tibiofibular joint and a screwdriver. A screw seat and the screw are fixedly connected, the screw is hollow and provided with external threads, once the screw is broken, the breaking position of the screw can be located through the hollow position, and the broken screw is taken out through a trepan; an annular reinforcing layer is arranged on the inner layer of the middle of the screw, the inner diameter of the reinforcing layer is 0.5-1 mm, and the reinforcing layer comprises a titanium alloy layer, an alloy steel layer and a zinc coating from inside to outside; the screw seat is provided with internal reverse threads opposite to the threads of the screw in helix direction. According to the hollow screw with the reinforcing layer, the screw is reinforced, the screw can be located after being broken, the internal reverse threads and a clamping opening are in the nail seat, the matched screwdriver with external threads can be used for solving the problem that the screw slides when being taken out, workload of medical staff is reduced, and unnecessary pain of a patient is avoided.