I was involved in a bad car accident about a decade ago and I had a major problem with retropulsed bone fragments interfering with my spine. The accident required me to go into surgery and it is my understanding that I spent several extra hours on the surgical table because the doctors had to carefully remove bone fragments around the sensitive areas of my spine.
I am fine now but this was a really scary time in my life. I wasn't sure how I was going to come through it. Luckily I had a lot of support from my family ans a great insurance policy. Without these things who knows where I would be now or what kind of shape I would be in.