Polydactyly, a birth defect meaning “many fingers or toes” in Greek, is one of the most common congenital limb differences in newborns, according to The Hospital for Special Surgery.

Polydactyly, a genetic condition, causes individuals to be born with extra fingers or toes. Usually harmless and hereditary, it results from a mutation in the GLI3 gene. The condition might ...

Every year, about 7.9 million infants (6% of worldwide births) are born with serious birth defects. With the causes of over 50% of birth defects unknown, how do we diagnose and prevent them?