no, food and doctor knifes dont count
here in Virginia, USA we've got a few trails notorious for being relatively dangerous for hikers.
quite a few years ago there was a hiker who had fallen from a crumbling cliff and
survived the impact, only to have an entire arm crushed under a giant rock impossible to remove himself from.
he was reported to have been missing for over a week before he ended up walking out of the woods
and seeking help.. his entire arm was missing and had been clamped shut by his shirt that he removed
and knotted onto to stop blood flow.
the hiker was carrying none other than a survival knife, and after realizing he had no choice but to remove his own arm
he spent many hours stopping blood flow, subsequently losing feeling in the arm, and then sawing through his own arm to remove it.
had he not been carrying a knife he would have been dead.
this is a true story, 100% i promise you. any local here in southwest virginia would remember it.
Pretty sure I heard about that, or something similar, on the news a few years back.
erm.... *cough????
http://www.imdb.com/title/tt1542344/
no???