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Scaphoid Open Reduction Screw Fixation

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Evolution of Scaphoid Open Reduction Screw Fixation

The guiding principle for operative treatment of scaphoid fractures is an anatomic reduction and compression across the fracture. There have been many developments to simplify techniques and minimize destruction when fixing it. Passing a small wire from either the front or back of the scaphoid along its long axis, checking its position with the aim to be as center as possible within the bone and then threading a hollow screw over the wire has shown to be an effective method to heal the bone. The design of the screw adds to its compressive ability. The far threads on the screw have a larger pitch than the near threads, so that as the far end of the screw engages the far fragment, the screw moves a larger distance per rotation than in the near fragment, compressing the two fragments together. Another technique involves a staple across the fracture site. The staple provides compression as well minimizes destruction of the center of the scaphoid.

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