The EXTERNAL GENERATIVE ORGANS are sometimes congested; erection of the penis may have taken place and persisted. The vagina may be moist. Tardieu, Devergie, and Casper[767] deny that these appearances are usual.
Involuntary discharges of urine, fæces, and seminal fluid may have occurred. There is nothing characteristic in their appearance.
All the external appearances of asphyxia are usually more marked in strangulation than in hanging.
Internal Appearances.—The mark. Usually there is hemorrhage into the loose connective tissue under the mark and in the subjacent muscles; in most cases isolated and circumscribed, but sometimes extending beyond the line of the mark. Hemorrhage from compression by the fingers is more marked than that from ligature.[768] Sometimes there is only fulness of the subcutaneous veins.
The CAROTID ARTERIES may suffer rupture of their inner and middle coats, especially in atheromatous subjects and when the compression has been great. Friedberg[769] states that the injury of the carotid, if there is hemorrhage into its middle and internal coats, is a proof that the strangulation occurred during life, and probably from pressure of the fingers on the neck, without any regard to any disease of the artery. He reports two cases. The examiner should be careful not to injure the artery with his forceps. The vessels may contain clots.
The NECK occasionally suffers extreme injury, and, owing to the violence used, this occurs oftener in strangulation than in hanging.[770] Occasionally the neck is broken.
The HYOID bone may be fractured (see Case 5). Maschka[771] saw one case in eighteen of Erdrosselung and five cases in fifteen of Erwürgen.
The TRACHEA is sometimes torn, or may be folded on itself.
The cartilages of the LARYNX, especially if calcareous, may be fractured. This is more likely to affect the thyroid than cricoid. The fracture would appear to occur only as the result of enormous force; especially in the young in whom the cartilages are so elastic. The experiments of Keiller[772] on cadavers led him to conclude that falls on the larynx, even from a height and with superadded force, are unlikely to fracture that organ; that severe pressure or violent blows against the larynx from before backward may cause fracture; but that severe lateral pressure, as in ordinary throttling, is more likely than other forms of violence to fracture the alæ of the thyroid or even the cricoid cartilages and also the hyoid bone. Taylor[773] states that Dr. Inman, of Liverpool, had informed him of a case of splitting of rings of windpipe from pressure (see Cases 5, 13). Maschka[774] in fifteen cases of choking found six fractures of the larynx.
Chailloux[775] has collected eight cases of fracture of larynx in strangulation. They were all made with the fingers. The experiments of Cavasse[776] seem to show that there is no great difficulty in fracturing the thyroid in strangulation.