3- 6 Fingers On Each Hand
This man’s thumbs are there and just would not bend at the knuckle, but are fully formed and can be moved at the base of the fingers.
Polydactyly runs in his family, too. Both he and his son had 12 fingers and 12 toes, although his boy had surgery when he was young.
4- Ulnar Dimelia Or Mirror Hand Syndrome
Ulnar Dimelia is a congenital deformity where the thumb is absent, the ulna is duplicated, and there are seven or eight fingers in the hand.
The condition is often referred to as “mirror hand syndrome.” It is so rare that less than 100 cases have been reported in medical literature.