Hand injuries declined by wide margins since better padded gloves are available. It's interesting to look at vintage photos of boxers from a century ago and observe their knuckles. Joe Lewis' two punching knuckles look like a Rhino's horn rather than a hand.
Originally Posted by Yuzo
back in the day fighters trained in gloves that were about 4 or 6 ounces. i don't know when or why fighters started training in big foam gloves. you can't make a fist and when you hit a bag with big foam gloves your punches are popping and bouncing off the bag. your punches are supposed to sink into the bag.