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Polydactyly

Helping Hand

Polydactyly (polly DAK tuh lee) refers to extra fingers or toes (digits) that are present at birth (See Pictures 1 and 2). Your child’s extra finger can be made up of one or more of the following:

  • Skin and soft tissue
  • Skin, soft tissue and bone
  • Skin, soft tissue and bone with joint, ligament, and tendon

If your child has an extra finger, it may occur in any of three places on his hand:

  • The small finger side
  • The thumb side, also called thumb duplication
  • The middle of the hand