Syndactyly, the webbing of two or more toes, is a common congenital malformation. The bonding often occurs between the second and third toes. The fusion can be simple, with the digits connected only by skin, or complex, with shared bones, nerves, blood vessels or nails. Syndactyly results from an abnormality in fetal development, usually caused by a genetic defect. It may occur in isolation or signal the presence of a multi-symptom syndrome.
The treatment for syndactyly is surgery, which is best performed during the early childhood.