Polydactyly - an infant's hand:

Extra digits may be present as an isolated finding, or they may occur as part of a syndrome, in which case other abnormalities are usually present. The most common form of polydactyly is an extra little finger.
- Reviewed last on: 2/5/2008
- Chad Haldeman-Englert, MD, Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA. Review provided by VeriMed Healthcare Network.