I don't recall the site's name, but if you google "80 causes of paraplegia" it might turn up. I read that it's a spinal cord injury, too, but then I read the 80 causes list.
All the disabilities that happened to Courtney, I don't want, whatever "trauma" can mean in connection to accurate use of the word, "paraplegia". That was obviously my point.
But wearing a helmet will not 100% guarantee that I won't end up like that or worse. A helmet will lower the chases of that happening but it's not 100%. We as professionals and semi-professionals need to talk about safety in real terms and speaking about helmets as if they will make you 100% safe is a big mistake and can give people a false since of security that could get them into trouble.