1) No, I did NOT have a Chiari malformation
2) The woman who tragically died last year in Barcelona during fusion surgery had vEDS, was given 50/50 chance
3) The case of the person who recently had a very poor outcome had surgery in England and had TWO surgeries at once: a decompression surgery for Chiari plus the fusion. She also had vEDS
5) I imagine that risk is much lower if you do not go to an average surgeon