this post was submitted on 23 Jul 2023
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[–] [email protected] 7 points 2 years ago (1 children)

Firstly your shoulder would follow the rotation for as long allowed. Then something would be dislocating, but whether it would be the head of radius or your shoulder I cannot tell. From there you get a whole lot of soft tissue injuries.

If you'd somehow continue to pronate (rotate your hand "inwards") and fixated your upper arm, you'd probably get a fracture of the proximal ulna or distal humerus, as they are rotationally fixed to eachother.

Note, I have not tested this. This is only my intuition, as someone who knows a bit of anatomy and medicine.

[–] [email protected] 2 points 2 years ago

Probably has a lot to do with the position of your arm as well i.e. elbow bent, arm straight out front, to the side like a T-pose, disembodied arm being fixed and twisted in a macabre "science" machine, etc.