Secondary to a solid object piercing a body cavity or extremity, usually with great force.
Type I injuries occur when the body in motion strikes an immobile object.
Type II injury occurs when a moving object collides with a stationary person.
Object often remains within the body.
The impaled object should be left in place in transit as it has the effect of tamponading surrounded injured vasculature.
Some surgeons treat impaled objects that cause through and through injury with a fistulotomy-like incision between entry and exit sites allowing removal of the object without pulling it through the abdominal wall along its entire length and prevents fragmentation of the object.
When an entrance wound exists, alone, a laparotomy incision may be needed.