Dont take this the wrong way, but Ive a feeling you have never done a days hard work in your life. Im talking manual labour, working with your hands, there many a time the problem lies. You have in your hands a third of the bones in your body, which bring with them a lot of cartilage called hyaline which protects the bone ends and very little else on the knuckle. You are going to have to strenghten your hands, with hand exercisesBoxers who have worked manuely dont have the same problems as office workers who Box. Get a pair of those X clamps in plastic and shadow box whileholding them with pressure while doing it. Its also a good way to punch faster its through the response mechanics go on then