Triphalangeal thumb and dermatoglyphics.
The dermatoglyphics of nine Japanese (three males and six females) with triphalangeal thumb were studied. The dermal pattern on the triphalangeal thumb showed the high increased frequency of radial loop pattern (69.2%).
D003878:Dermatoglyphics; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D013933:Thumb / Q000002:abnormalities*