Syndactyly type I (185900) is an autosomal dominant limb malformation characterized in its classical form by complete or partial webbing between the third and fourth fingers and/or the second and third toes. Zygodactyly is a subtype of type I syndactyly in which webbing of second and third toes occurs without hand involvement (summary by Malik et al., 2005). [from
OMIM]