Some friends of mine had a kid born with spinal bifida. It's a screwup where the spinal cord is exposed outside the body, in her case anyway. I suppose some cases are not that severe.
It was supposed to be correctable. They poured their life savings into fixing her, and the kid died before she hit puberty. He suicided and she was drinking herself to death when she overdosed. I'd have been a lot happier if they'd flushed it, but not my call.
"Correctable" can be overrated in a lot of things.