Long story short i punched a window and got about 20 stiches and i cant move my hand good. I thought it was a plastic window, but i was wrong and paid the price i guess.
I once thought I was just slapping a door, but I slammed my hand through a glass window and broke it completely... luckily I didn't even get a cut... it was really expensive to replace though, I still owe on that.
I have permanent loss of function and sensation in my right hand due to window glass. Did you cut any nerves?