Geez, I cannot remember all the times I have come off a horse LOL. I will just hit some of the worse or most recent ones.
I was 9 and trying out a "kid horse" that a doctor friend of my parents was looking to buy for his daughters. My brother and I were loping down a road and as we passed a vacant lot on the right. My horse saw some kind of boogeyman and sucked back to the left. I went flying off his side and when I went to break my fall with my hands, I shattered my left arm. Broke one bone in 3 places and the other in 2 before shoving all the little bone fragments through my wrist and up into my hand. It took 2 surgeries, 4 screws, 1 pin, and an external fixator just to get it back to the shape it was supposed to be. Spent all summer in a cast before going in for another surgery to remove the screws and pin. Dr's said I would probably never have use of the last 3 fingers on my hand (pinky, ring, and middle). However, I do have full use, just some limited mobility and pain.
Then when I was about 14 or 15, I was starting this huge red roan mare. I pushed her too fast and got her out in the pasture before she was ready to be out of the pen. She got spooked, jumped to the side, took a huge buck, another spin, a rear, a lunge, and another huge buck. Down I went and I hit on the right side of my head and the top of my right shoulder. I don't think it knocked me out but I layed out there in the pasture for probably 2 hours thinking that I had broken my neck because I couldn't move. After a while, I started getting that tingly pins-and-needles feeling all over and was able to crawl back to the house. I spent the next month going to the chiro like 3 times a week. I still have neck and back pain thanks to that witch.
One of the more recent ones was off of a little Arab gelding I was training. I was riding him in the country on a fairly windy day. He was going along fine until he saw the windmill. All of a sudden, he sucked back, spun, and then did this huge rear-lunge thing that just dumped me out the back of the saddle. I hit on the right side of my back. I am fairly certain I ended up with a pinched nerve because I had random shooting pains down my right leg for a while after that. As if dumping me wasn't enough, he ran off and left me to walk like 2 miles back to the gate that he was waiting at.