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And Mr. Fackler is quite a respected guy….

Martin Fackler had this to say in the Wound Ballistics Review. 4(1):13; 1999.

“Shots to the Pelvic Area “.

“I welcome the chance to refute the belief that the pelvic area is a reasonable target during a gunfight. I can find no evidence or valid rationale for intentionally targeting the pelvic area in a gunfight. The reasons against, however, are many. They include:

From the belt line to the top of the head, the areas most likely to rapidly incapacitate the person hit are concentrated in or near the midline. In the pelvis, however, the blood vessels are located to each side, having diverged from the midline, as the aorta and inferior vena cava divide at about the level of the navel. Additionally, the target that, when struck, is the most likely to cause rapid and reliable incapacitation, the spinal cord located in the midline of the abdomen, thorax and neck), ends well above the navel and 18 not a target in the pelvis.

The pelvic branches of the aorta and inferior vena cava are more difficult to hit than their parent vessels — they are smaller targets, and they diverge laterally from the midline (getting farther from it as they descend). Even if hit, each carry far less blood than the larger vessels from which they originated. Thus, even if one of these branches in the pelvis is hit, incapacitation from blood loss must necessarily be slower than from a major vessel hit higher up in the torso.

Other than soft tissue structures not essential to continuing the gunfight (1oops of bowel, bladder) the most likely thing to be struck by shots to the pelvis would be bone. The ilium is a large flat bone that forms most of the back wall of the pelvis. The problem is that handgun bullets that hit it would not break the bone but only make a small hole in passing through it: this would do nothing to destroy bony support of the pelvic girdle. The pelvic girdle is essentially a circle: to disrupt its structure significantly would require breaking it in two places. Only a shot that disrupted the neck or upper portion of the shaft of the femur would be likely to disrupt bony support enough to cause the person hit to fall. This is a small and highly unlikely target: the aim point to hit it would be a mystery to those without medical training — and to most of those with medical training.

The “theory” stated in the question postulates that “certain autonomic responses the body undergoes during periods of stress” causes officers to shoot low, and that apparently this is good in a gunfight because such shots cause “severe disability.” I hope that the points presented above debunk the second part of the theory. As for the “autonomic responses” that cause officers to shoot low, I am unaware of anything in the anatomy or physiology of the autonomic nervous system that would even suggest such an occurrence. Most laymen do not understand the function of the autonomic nervous system. It is simply a system whose main function is to fine tune the glands and smooth muscles (those in the walls of organs and blood vessels) of the body. During times of stress such as perceived impending danger, the autonomic nervous system diverts blood from the intestines and digestive organs to the skeletal muscles — in the so-called “fight or flight” response. The effects of this response are constantly exaggerated by laymen who lack an adequate understanding of it — most notably by gun writ-ers eager to impress their readers. Interestingly, the human body can get along quite well without major parts of the autonomic nervous system. During my professional life as a surgeon, myself and colleagues removed parts of thousands of vagus nerves (mostly in treating peptic ulcer disease) — thus depriving the patient of the major part of the parasympathetic half of the autonomic nervous system. We also removed many ganglia from the sympathetic half of the auto-nomic nervous system, in treating such things as profusely excess sweating and various problems caused by spasm of the arteries. I am unaware of any evidence that these operations produced any significant effect on the future capacity of these patients to react appropriately in times of impending danger.

Unfortunately, the pelvis shot fallacy is common. This fallacy, along with other misinformation, is promoted constantly by at least one gun writer who is widely published in the popular gun press. Because of this, I regularly debunk this fallacy by including some of the above rationale in my presentations to law enforcement firearm instructor groups.”