If a wound does occur,

seek the best medical attention
possible immediately. Apply direct pressure first. If that is
not effective, apply indirect pressure and elevate the wounded
portion of the body (except in the case of head wounds). A
true Ninja should be familiar with the types of wounds
which throwing knives can possibly cause, and how such
wounds should be treated. Any serious Ninja will know
advanced first aid and will never be without an emergency
first aid kit to deal with both major and minor injuries.
Some misinformed people believe that the knife is the
favorite or even the preferred weapon of the Ninja. This is
not true. Although a knife is the first weapon, outside of the
weapons of mind and body, that a Ninja trains with, to say
that a knife is the favorite weapon of the Ninja is erroneous.
Ninja do not have favorite weapons. They are capable of
using all weapons and are free to use no weapons. Knife
throwing is just one facet of Tanto-jitsu (knife art), which is
in turn only one facet of The Way.