Flying Crane
Sr. Grandmaster
It actually does not take a lot to break your hand. Particularly with haymaker and hooking punches it is easy to land on the knuckle of the ring and pinkie fingers by mistake, and the metacarpals in that part of the hand can break when that happens.Real sloppy haymaker hook, but it did it's job. This guy def. don't train. It takes a lot to break your hand. Just make your fist tight as a rock.
I believe they actually call it a “boxer’s fracture” because it tends to happen when someone who trains a lot with boxing gloves and wraps, which protect the hand, lands a punch without wearing the gloves and wraps. They aren’t used to being specific about which part of the fist lands because of the protection provided by the gloves and wraps, and they get injured.