The long and ring fingers or the second and third toes are most often affected.
Simple syndactyly involves only the skin and other soft tissues.
Complex syndactyly involves fused bones, nerves, blood vessels, and tendons. Generally, syndactyly repairs are done between the ages of 6 months to 2 years. General anesthesia is used. Skin areas to be repaired are marked. The skin is incised, and small flaps at the sides of the fingers and in the web are lifted up.