Chung et al reported a classification for radial polydactyly (duplication of the thumb). The authors are from Seoul National University in Korea.
Patient selection: radial polydactyly (duplicated thumb)
Origin of Extra Digit
Type
Descriptor
has as an independent articular surface
I
joint type
arises from a shared epiphysis
II
epiphyseal type
point of origin resembles an enchondroma
III
enchondroma type
point of origin is soft tissue only
IV
hypoplastic type
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Specialty: Surgery, orthopedic
