Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Polydactyly ?
    ### Response:
    Polydactyly is a condition in which a person has more than five fingers per hand or five toes per foot. It is the most common birth defect of the hand and foot. Polydactyly can occur as an isolated finding such that the person has no other physical anomalies or intellectual impairment.
    