Ectrodactyly, also know as split hand, cleft hand, and lobster claw hand, is a rare condition. The hand and/or feet of a person with ectrodactyly will be missing one or more fingers or toes (or even just a part of a finger or toe). In the most common form (which is described by its other names), people with ectrodactyly have their thumb and their little finger and ring finger and are missing their index finger and middle finger, with a similar situation of their feet. Sometimes people with ectrodactyly are born with syndactyly of their ring finer and little finger; this means that their ring finger and middle finger are fused or joined together. People are born with ectrodactyly and it can often also be detected by ultrasound before a baby is born. Once baby has been born, parents sometimes choose to have surgery on the baby’s hands and feet for cosmetic reasons (how it looks). There are multiple forms of ectrodactyly, some that only cause the hands and feet to appear different, and other forms that can cause deafness and other symptoms. Talk with your doctor if you or your child has been diagnosed with ectrodactyly to find the best treatment for you.