The Wassel classification is used to categorise radial polydactyly, based upon the most proximal level of skeletal duplication. [1]
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.
Type | Level of duplication |
---|---|
I | Distal phalanx |
II | Interphalangeal joint |
III | Proximal phalanx |
IV | Metacarpophalangeal joint |
V | Metacarpal |
VI | Carpometacarpal joint |
VII | Triphalangia |
This article about Orthopedic surgery is a stub. You can help Wikipedia by expanding it. |