Ripped Knuckles....
 

i had this (incident with a brick wall) and i tried a couple of small plasters cos a bandage meant i couldn't move my hand and couldn't keep it on. But they annoyed me though and in the end i left them uncovered, i washed them each night and luckily they didn't get infected, so anyway i'd say most important thing is cleaning it, then try whichever thing is most comfortable for you

and if you worry about scars then it might be worth putting scar reducer stuff on them as soon as they are healed, i didn't think mine were that bad but they are still really obviously scarred (purple and raised) about 6 months later i think it's something to do with where they are

I know it's a tad expensive, but spray plaster might be good for this, as keeping any kind of dressing on knuckles and keeping them clean is gonna be a total biyatch!

Thats going to be difficult to keep clean, but as mentioned above, one of the best things you could use on a wound like this would be the liquid bandages you can get. This is just like a spray or a liquid that you put on the area and it acts like a plaster to protect from infection.