Actually judging from the comments here I expected the trailer to be worse and more shocking, having said that, I very rarely watch gruesome (modern) horror movies anyway, seen the three first Saw-movies and liked them, but that's about it, very much doubt I'll see this one either.
I don't know, partly it's the quarter of my blood, but I don't like the fact that the surgeon is German, it's just sort of typical, with the accent and indirectly seeing them as creepy, due to well...youknowwhat etc.