Triplication of the thumb.
A child with triplication of the thumb is presented. Each thumb was fully developed with neurovascular bundles, flexor and extensor tendons. Although all three thumbs were triphalangeal, they shared a common metacarpal and two shared a common proximal phalanx. Since this anomaly does not fit in the existing accepted Wassel (1969) classification, a new category is suggested.
Mennen
U
U
Department of Hand- and Microsurgery, Medical University of Southern Africa and Ga-Rankuwa Hospital, Medunsa, Republic of South Africa.
D006801:Humans; D011859:Radiography; D013933:Thumb / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery