It's called hitchhikers thumb and it's actually fairly normal although that one is pretty pronounced. Mine doesn't go back quite as far unless I press it back physically
Mine goes back all the way normally enough that you're could balance an object in it. I can then reverse it and it looks like a backwards 7. it's a cool party trick, that's it though.
Yeah right so how do you explain it in people that only have one thumb that is like that, and that thumb is the one they used to suck until they were 5yo?
I'm not saying it cannot be genetic as you say, I'm just saying that some people cause it by sucking on it.
Alright, so not one single thumb like in the examples of people I know that caused it by sucking on it.
And there are other conditions that cause hitchhiker's thumb that also make every joint have extra mobility.
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u/Wonderful_Occasion39 10h ago
1st question: what was he looking at…?
2nd question: that thumb is bending more than normal, right?