Of the survivors, defenders Alan Ruschel and Neto remain in a stable but critical condition, with the former having had spinal surgery. Goalkeeper Jakson Ragnar Follmann has had his leg amputated and could lose his other foot.
There were nine players who did not travel.
One of those, reserve goalkeeper Marcelo Boeck, said he and several players had deals to leave the club next year, but are now reconsidering.