The medical term for two or more fingers or toes that are fused together or “webbed” is syndactyly (sin-dak-tuh-lee). If your child has it, it was present at birth.  

Webbed fingers or toes:

  • Are fairly common and often run in families
  • Occur in about one out of every 2,500-3,000 newborns
  • Affect boys more often than girls
  • Affect whites more often than blacks or Asians
  • Affect both hands about 50 percent of the time
  • Can occur alone or as part of a genetic syndrome, such as Down syndrome
  • Can sometimes be seen prior to birth by ultrasound
  • Most commonly involve the middle and ring fingers