Wassel classification

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The Wassel classification is used to categorise radial polydactyly, based upon the most proximal level of skeletal duplication. [1]

Polydactyly Physical anomaly

Polydactyly or polydactylism, also known as hyperdactyly, is a congenital physical anomaly in humans and animals resulting in supernumerary fingers and/or toes. Polydactyly is the opposite of oligodactyly.

Classification

Type Level of duplication
I Distal phalanx
II Interphalangeal joint
III Proximal phalanx
IV Metacarpophalangeal joint
V Metacarpal
VI Carpometacarpal joint
VII Triphalangia

References

  1. ↑ "Orthobullets" . Retrieved 27 October 2014.
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