Palmar interdigital ridge counts were examined in normal Koreans. Ridge counts are 73.00 of the a-b, 52.12 of the b-c, and 69.39 of the c-d for the males, and 73.21 of the a-b, 53.60 of the b-c, and 70.12 of the c-d for the females, respectively. There was nonsignificance for the bimanual and for the sex difference, respectively.
