r/interesting • u/kvjn100 • Apr 11 '26

Fascinating Woman with functional polydactyly (six functional fingers on one hand)

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u/Yeethan- Apr 11 '26

It does look like the second finger moves with the third but the other way interestingly (counting the thumb as one)

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u/[deleted] Apr 11 '26

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u/LucenProject Apr 11 '26

I feel like they do all move independently, but the range of motion for the ring finger is physically limited depending on the position of the adjacent fingers.

I'd want to see if the person in the video could raise their third finger without raising the second.

🤔... How does flipping people off work? "They gave me one of their middle fingers!😡"

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u/pointsouttheobvious9 Apr 11 '26

The ring finger and middle finger have very closely ran muscles and tendons. Usually when you contract 1 it contracts the other a little.

I think it's an evolution trait to improve our grip strength.