Is there an anatomical abnormality of the uterine cavity that will not allow appropriate IUD insertion?
If there is an anatomical abnormality that distorts the uterine cavity, proper IUD placement may not be possible. Cervical stenosis also may preclude an IUD insertion. 21. Were you unable to determine the size and/or position of the uterus? Determining size and position of the uterus is essential before IUD insertion to ensure high fundal placement of the IUD and to minimize the risk of perforation.