Herbert screw
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A Herbert screw is an instrument used in the internal fixation of an unstable scaphoid fracture. It is a headless screw with the thread along its entire length. The two halves of the screw have a different pitch though, which causes compression of the fracture.
Indications
Unstable scaphoid fractures which include:
- displacement >1 mm
- scapholunate angle >60o
- radiolunate angle >15o
- delayed/non-union
Disadvantages
- ineffective in long standing non-united scaphoid fractures
-<p>A <strong>Herbert screw</strong> is an instrument used in the internal fixation of an unstable <a href="/articles/scaphoid-fracture">scaphoid fracture</a>. It is a headless screw with the thread along its entire length. The two halves of the screw have a different pitch though, which causes compression of the fracture.</p><h4>Indications</h4><p>Unstable scaphoid fractures which include:</p><ul>- +<p>A <strong>Herbert screw</strong> is an instrument used in the internal fixation of an unstable <a href="/articles/scaphoid-fracture">scaphoid fracture</a>. It is a headless screw with the thread along its entire length. The two halves of the screw have a different pitch though, which causes compression of the fracture.</p><h4>Indications</h4><p>Unstable scaphoid fractures include:</p><ul>
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