Wassel classification for radial polydactyly

Dr Jeremy Jones et al.

The Wassel classification system is used to classify pre-axial polydactyly, also called radial polydactyly.

The classification system is based on the level of duplication from distal to proximal.

  • I: bifid distal phalanx
  • II: duplicated distal phalanx
  • III: bifid proximal phalanx
  • IV: duplicated proximal phalanx
  • V: bifid metacarpal
  • VI: duplicated metacarpal
  • VII: triphalangism

Article information

rID: 86612
Tag: cases
Synonyms or Alternate Spellings:
  • Wassel classification

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Cases and figures

  • Case 1: Wassel 1
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