Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Syndactyly type 3 ?
    ### Response:
    Syndactyly type 3 (SD3) is a limb abnormality present at birth that is characterized by complete fusion of the 4th and 5th fingers on both hands. In most cases only the soft tissue is fused, but in some cases the bones of the fingers (distal phalanges) are fused.
    