Is motor and sensory function reduced in polydactyly?

Question

Is there reduced function? Other than appearing abnormal, is there any other disability to having additional digits? The thing that is really bugging me is this: can someone with additional fingers actually use it to play the piano? that would advantageous and amazing if you can have 11 or 12 fingers on the piano.

Answer 1

most polydactyls do not have the fine motor function in their additional digits required to play an instrument or even type. They are simply there.