The traditional method of literary analysis known as “Compare and Contrast” gets a workout in this newly published medical study:
“Similar mechanisms of traumatic rectal injuries in patients who had anal sex with animals to those who were butt-fisted by human sexual partner,” Damian Jacob Sendler, Journal of Forensic and Legal Medicine, vol. 51, 2017, 69e73.
The author, at the University of Lublin Medical School, Lublin, Poland, reports;
“Among zoophiles, the mode of harm occurs through blood-engorged, interlocked penis that causes tissue lacerations upon retraction from an anus. In people experimenting with fisting, repetitive stretching within anal canal and of external sphincter causes the internal injuries. The mode of physical stimulation explains the extent of injuries in fisters vs. zoophiles: in fisting, the pressure applied by hand is controllable proximally around and within anal sphincter, while penetration by the animal penis is unpredictable and occurs within the proximal anal canal. Forensically, the findings presented in this article describe a significant mechanism of injury in fisters versus passive zoophiles. These descriptions may aid in clinically differentiating pleasurable and pathological rectal stimulation.”
Here’s additional detail from the study:
(Thanks to Ivan Oransky for bringing this to our attention.)