| 摘要 |
A method of bone fixation comprises engagement of internal threads on an implantable object associated with the bone at one side of the fracture with the external threads on the shaft of another implantable object associated with the bone at the opposite side of the fracture. The preferred embodiment comprises two cannulated screws of different diameters which associate with the bones at the opposite sides of the fracture via their screw heads contacting the bone surfaces, and the screws are screwed into the bones manually or drilled towards each other and engage by means of internal threads of the larger-diameter cannulated screw and the external threads of the smaller-diameter cannulated screw. The engagement of the two cannulated screws is aided by a guiding mechanism.
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