Herbert screw

A Herbert screw is an instrument is used in internal fixation of unstable scaphoid fracture. It is a headless screw with 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/nonunion

Disadvantages

  • ineffective in long standing nonunion scaphoid fracture
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Article Information

rID: 24335
Section: Gamuts
Synonyms or Alternate Spellings:
  • Herbert screws

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Cases and Figures

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    Case 1
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    Scaphoid fracture...
    Case 2
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    Case 3: with scaphoid nonunion
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