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Why are the lengths the way they are with middle finger the longest?

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I'm no expert but the relative length of fingers perhaps represents functional significance. It's always helpful in the question to mention what you have found on the topic so far so people can have a constructive input/answer. –  Bez May 19 at 14:21

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When you bend your fingers, they all arrive at the same height. I would tend to think that their lengths differ when you keep them straight because they need to have similar length when you bend them to grasp something. And I guess that there is some optimal length (when bended) for fingers to grasp things.

It is nothing but a quick hypothesis. But it sounds very plausible to me.

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Very interesting angle. Never thought of this. Thank you for your answer. –  Harijs Deksnis May 19 at 19:21

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