Downloaded by: NYU Medical Center Library 198.143.37.1 - 4/7/2016 11:44:54 AM

Downloaded by: NYU Medical Center Library 198.143.37.1 - 4/7/2016 11:44:54 AM

Downloaded by: NYU Medical Center Library 198.143.37.1 - 4/7/2016 11:44:54 AM

Doubled nail of the thumb. A rare form of polydactyly.

Bifid thumb is a rare manifestation of polydactyly. The trait is autosomal dominant, but the expressivity is highly variable. It must be distinguished...
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