Surgical Experiences in South Africa, 1899-1900 / Being Mainly a Clinical Study of the Nature and Effects of Injuries Produced by Bullets of Small Calibre

by George Henry Makins

As a rule, the wounds of the abdomen which from their position proved the most dangerous to the intestine were—

1. Wounds passing from one flank to the other were very dangerous, as crossing complicated coils of the small intestine, and two fixed portions of the colon. This danger was most marked when the wounds were situated between the eighth rib in the mid axillary line and the crest of the ilium; above this level the liver, or possibly liver and stomach, were sometimes alone implicated, and the cases did well. Again, when the wounds crossed the false pelvis the patients sometimes escaped all injury to viscera.

2. Antero-posterior wounds in the small intestine area were very fatal if the course was direct; in such the small intestine seldom escaped injury.

3. Wounds with a certain degree of obliquity from anterior wall to flank, or from flank to loin, were on the other hand comparatively favourable, as the small intestine often escaped, and if any gut was wounded, it was often the colon.

4. Vertical wounds implicating the chest and abdomen, or the abdomen and pelvis, were on the whole not very unfavourable. For instance, when the bullet entered by the buttock and emerged below the umbilicus, a number of patients escaped fatal injury; this depended on the comparatively good prognosis in wounds of the rectum and bladder. A good many patients in whom the bullet entered by the upper part of the loin, and escaped 1½ inch within the anterior superior spine of the ilium, also did well. The same holds good when the wounds either entered or emerged under the anterior costal margin of the thorax, either prior to or after traversing the thorax.

Wounds passing directly backward from the iliac regions were in my experience very unfavourable; but I believe mainly as a result of hæmorrhage from the iliac arteries.

The occurrence of wounds of the abdomen of an 'explosive' character.—The vast majority of the abdominal wounds observed in the Stationary or Base hospitals were of the type dimensions. A certain number of the abdominal injuries which proved fatal on the field or shortly afterwards were described as explosive in character, and were referred by the observers to the employment of expanding bullets.

A few words on this subject seem necessary, because it seems doubtful whether such injuries could be produced by any of the forms of expanding bullet of small calibre in use, unless the track crossed one of the bones in the abdominal or pelvic wall. That this was sometimes the case there is no doubt: thus I saw two cases in which the splenic flexure of the colon was wounded, in which the external opening was large, and a comminuted fracture of the ribs of the left side existed. One can well believe that bullets passing through the pelvic bones might 'set up' to a considerable extent, and although I never happened to see such a case, an explanation of some of the wounds described by others might be found in this occurrence.

In instances in which the soft parts alone were perforated, I am disinclined to believe that bullets of small calibre, either regulation or soft-nosed, were responsible for the injuries. I had the opportunity of examining two Mauser bullets of the Jeffreys variety which crossed the abdomen and caused death. In the first (figured on page 94, fig. 40) very little alteration beyond slight shortening had occurred. In the second the deformity was almost the same, except that the side of the bullet was indented, probably from impact with some object prior to its entry into the body. In each case the bullet was of course travelling at a low rate of velocity; hence no very strong inference can be drawn from either. In the case of the second specimen, which was removed by Mr. Cheatle, a remarkable observation was made, which tends to throw some light on one possible mode of production of large exit apertures. This bullet crossed the cæcum, making two small type openings; but later, when it crossed the sigmoid flexure, it tore two large irregular openings in the gut. This might be explained on the ground that the velocity was so small as only just to allow of perforation, which therefore took the nature of a tear. I am inclined to suggest, as a more likely explanation, that the spent bullet turned head over heels in its course across the abdomen, and made lateral or irregular impact with the last piece of bowel it touched. A slightly greater degree of force would have allowed a similar large and irregular opening to be made in the abdominal wall also.

In this relation the question will naturally be raised as to how far the explosive appearances may have been due to high velocity alone on the part of the bullet. I am disinclined from my general experience to believe that explosive injuries of the soft parts were to be thus explained. On the other hand, I believe that the possession of a low degree of velocity very greatly increased the danger in abdominal wounds. I believe that the bowel was, under these circumstances, less likely to escape by displacement, and was more widely torn when wounded; again, that inexact impact led to increase of size in the external apertures, and the bullet was of course more often retained.