I got my hand sprained after accidentally fell from going out of the bus.. At first, I was afraid that my left hand got fractured cause I couldn't move it.. It hurt as hell.. Luckily,it was just a sprain so only few weeks, I didn't get to play my guitar.. After that incident, I couldn't play guitar long like before..
I also got a pretty bad back pain for carrying heavy loads.. actually somewhere down my spinal column..I was examined and it turned out I have mild scoliosis.
I didn't have serious injuries.. Just got lucky..