On Monday I was walking up an escalator at work. I was not running. I was walking. I was not rushing.
And jammed the middle knuckle of the middle finger of my left hand into the sharp teeth on the top edge of the escalator step.
It was a minor injury, and is healing well. But it was still an injury.
An avulsion of the skin around the knuckle.
I am OK, but I still can't play the piano.