how do they suppose to put it in there?

i just saw a diagram of the inside of the body. it looks very difficult to place something in the right position inside the uterus during the cycle. i see why alot of mirenas end up in the bladder. now i wonder what a prolasped uterus looks like. this is a picture.


http://images.search.yahoo.com/search/images/view?back=http%3A%2F%2Fimages.search.yahoo.com%2Fsearch%2Fimages%3Fp%3Duterus%2Bbladder%26y%3DSearch%26ei%3DUTF-8%26fr%3Dmsgr-buddy%26x%3Dwrt%26js%3D1%26ni%3D21&w=420&h=266&imgurl=www.alternativesurgery.com%2Fimages%2Fcontent%2Fcon_education_normaluterus.gif&rurl=http%3A%2F%2Fwww.alternativesurgery.com%2Feducation%2Fnormaluterus.php&size=33.4kB&name=con_education_normaluterus.gif&p=uterus+bladder&type=gif&no=14&tt=209&oid=b3d50ba7296074f0&ei=UTF-8