having parts of your anatomy slowly sawed off and then being put into cold water for an hour or so will, in all probability, induce a major system shock.
we call that "apply ice to affected area" IOT reduce swelling...and in all probability give it a little primitive novocain lovin'. I'm thinking I'd want the cold stream treatment prior to the, uh, surgical procedure.

As to the whole PTSD aspect of the thing….naw. Folks in the third world, dependant on culture, are pretty much programmed through repeated events and annealed to physical hardship. We’re just “softer” here for a variety of reasons….e.g. very few of us don’t kill/dress our food, air conditioning (cable TV, etc) is viewed as a right, not a privilege, and my $100 Doc Martins protect my feet way better than those ratty old flip flops. IMO physical “toughness” goes a long way in combating PTSD.