I broke my left arm after falling off of monkey-bars when I was like 9ish. Cracked my funny bone right near the elbow, so I had to wear a cast for about 6 weeks. Fucking everyone at primary school wanted to sign my cast for some reason. Scored 2 TDs playing football while wearing it (the only 2 TDs I remember scoring, go figure). Also fell off the edge of a small pillar at a shopping center and bruised my knee to the point where I had to use crutches when I was maybe 10-11. If it counts as an "injury" I had to get surgery for appendicitis at one point and had trouble walking for a week coz it fucking hurt.
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Got bit by a coral snake when i was seven, my whole leg turned black and i was told they had to amputate but they were able to save it. Still, I was wheelchair bound for several months, luckily i got to watch old spongebob and dexters lab 24/7 so i didn't mind too much.