My curiousity got the best of me and I did the search. Eww to the eww eww eww. A friend of mine did mention that an older girlfriend of hers had a condition where her uterus popped out. The condition typically happens to a women that has a lot of kids...something about the muscle weakening and the uterus beginning to sag. So I could see how that might happen to an anus. Eww eww eww.Midas426
Its called prolapse, due to tention and tearing the connective tissue and ligament gets worn down. Not really dangerous thou just need to "stuff" it back in and let it heal. It can either be connected to the menopaus due to hormon changes or an effect of child birth.
But yeah, there are risks in analsex:
risk of hemmoroids due to damage of the well vasculated walls of the anal canal, bleeding in rare cases due to weak folds of anal canal, problem with the Sphincter Ani Extensius muscle.
These problems are ofcourse not law, but can be a problem, some may be more unluckier then others. I guess is a start to prevent complications related to analsex... Well and also a bit of common sense, Dont jam things up if its with force, use proper lubricatoin etc..,