What is Syndactyly/Polydactyly?
Syndactyly and polydactyly are the most common types of congenital hand deformities. Syndactyly is webbing or fusing between the digits (fingers or toes). The digits can be partially fused or fused along their entire length. The severity can range from simple fusion with digits connected only by skin to more complicated fusion with shared nerves, blood vessels, bones, and/or nails. Syndactyly most commonly occurs between the middle two fingers.
Polydactyly means having an extra finger and/or toe. It can range from a barely observable, undeveloped digit to a fully developed, functioning digit. When syndactyly and polydactyly are present simultaneously, it is called Polysyndactyly.