Sometimes it's not necessary to SEE the action. Imagination is enough. Also, an illustration would serve the same purpose with less traumatizing realism. Yes, the bedsore article is pretty graphic, but that's a medically-related image. They broadcast medical surgeries on public television. This brings up qualms with minors perusing Wikipedia. They are legally allowed to view images of a non-sexual graphic nature, as there is no law against images depicting medical procedures or graphic violence, but it is illegal for a minor to view pornographic images. If you ask me, this image is pretty pornographic; it's not just an image of nudity, it's an image graphically depicting a sexual act.     