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Classification in relation to limb axis

Authoring team

Polydactyly may be classified according to the position of the extra digit, or parts of digits, in relation to the axis of the limb:

  • ulnar or post-axial polydactyly
  • central polydactyly
  • radial or pre-axial polydactyly

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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