Well I've only every had one serious injury due to horses. I've had many bruises and scraps over the years but I don't usually keep track of them or how they happened. Horses stepping on my feet, horse dragging me through a thorn bush, falling and bruising my legs, pulling muscles in my neck, that sort of stuff.
My only serious hospital worthy accident took place this past October. I was on a trail ride on the green horse I was working with at the time and he spooked and tried to take of for home. I lost my balance and fell while he was going about 30 miles per hour. I nearly hit the paved road but thankfully landed in the grassy ditch instead. Thankfully I was wearing a helmet because I hit my head on the ground. I ended up shattering my right elbow and messing up some ligaments there. Got some good bruises too. Also stretched a nerve in my right hand that made it go numb for a couple months. But I'm glad that's all it was. I had to have surgery but it could have been much worse. I've lost some of my range of motion in my right arm and I might need another surgery in a year if it doesn't fix itself, but other than that I'm all better now.