LB78.0
Polydactyly of the thumb
Polidactilia do polegar
CategoryDefinition
Polydactyly of a biphalangeal thumb is the most common form of preaxial polydactyly of fingers, a limb malformation syndrome, that is characterized by the duplication of one or more skeletal components of a biphalangeal thumb. Hands are preferentially affected (in bilateral), and the right hand is more commonly involved than the left.
Index Terms
Polydactyly of the thumbaccessory thumbsupernumerary thumbPolydactyly of a biphalangeal thumbextra thumbPolydactyly of the thumb, unilateralPolydactyly of the thumb, bilateral