It is called a ring avulsion injury. Occurs in various forms of severity about 150,000 times per year, and represents about 5% of all upper limb injuries. Happened in a bad way two years ago to Jimmy Fallon. Fallon wasn’t hunting. He tripped over a rug, caught the ring on the edge of a table.
My uncle, who was an elevator inspector for N.C told
me about riding on the top of an elevator with some
maintainence guys and as they were descending one of
them was letting his hand slide against the wall.
Well, there was a nail sticking out that caught his
wedding ring and left him hanging from his finger,
they stopped went back up and go him, had to cut the
ring off as his finger had swollen to twice the size.
A lesson for every one.
My uncle was missing a leg, as one day he was working
in an escalator with the floor plates off and it started
up. Yep, learned the no jewelry thing as a welder.