Luckily not from my own experience. But I am careful as anyone could possibly be, you just need to have that kind of mindset, when something happens is too late. Everytime I'm doing something; for example open doors of upper cabinet can be very dangerous, as you forget you left them open... or going in and out of the car, and many many other situations. You just really don't want to create accident by yourself, and compromise FFS result by your own carelessness. I did read though, and seen pictures, when people let anything like that happen to them. Its extremly sad. I can imagine how would I feel. Even though something can be done, and things can be fixed (al least mostly) it still means paying for revision surgery, hospital costs again, flights and other expenses, and going through another recovery.. all this after you've already been through this, paid all you had for your FFS, and should instead be finally happy and just enjoy life.