When I was 2, I fell off of a stool and cut my chin wide open. Dad said it looked like a fish mouth. (Split my chin open again when I was 15 or so on one of those "Moon Walk" bouncing air things at the beach. I have two good scars on my chin.)
When I was 4, my brother was chasing me through the house, I stepped on one of those cardboard blocks on a hard wood floor, feet went out from under me, went straight down and smashed my face on the floor, busting both front teeth off at the gums. Had to go to a dentist to get the remaining parts cut/pulled out of my gums. Didn't have front teeth until I was 7.
When I was 5 or so, I was helping a neighbor girl put the chain back on her bike. Had the bike turned upside down resting on it's seat and handlebars. She asked me if it was ready, .. I said no, but she turned the pedal anyway, taking my finger around the sprocket, cutting about 1/2 of an inch of my right middle finger off. My mother put it in a wet washcloth and took me to the hospital and they sewed it back on.
When I was in the 4th grade, I fell about 4-5 feet off of a big stone porch, when I put my hands out to catch myself, my left arm broke in two about halfway between my elbow and my wrist. My arm looked like an S from my elbow to my wrist.
Bones didn't come through the skin, but they were sticking the skin way out.
It was pretty gross looking, and scared me. I thought I would always have an S shaped arm forever. But they took me to the hospital and they fixed me up pretty good.
I could go on and on, I had a pretty eventful childhood, ... at least 11 or 12 broken bones, 100+ stitches, at least 4 concussions.
I broke 5 bones in my face when I was 23, had to have facial surgery to repair, .. but I guess I wasn't a kid so that doesn't count.