A hysterographic study using the diluted dye technique (Urographin diluted to 15%) was carried out on 80 women to study the side effects that might result during the use of the T Cu 200 device in te 1st year of insertion. The hysterographic pictures showed the position and orientation of the device inside the uterine cavity and the side effects were related to the position of the device and size of the uterus in some cases. The women were divided into 4 groups according to their subjective symptoms; a control group with no complaints (37 cases), a group complaining of bleeding (27 cases), a group complaining of pain (11 cases) and a group who expelled the device (5 cases). The group complaining of bleeding were found to have a large sized uterine cavity. This was found to be statistically significant when compared to the control group. The other X-ray findings of orientation, anchorage or displacement of the device inside the uterine cavity were statistically insignificant when compared to the findings of the control group. The hysterographic findings in the group complaining of pain were statistically insignificant when compared to those in the control group. Cases of expulsion of the devices were found to have a large sized uterine cavity, a wide fundus and a diluted uterine isthmus. These findings were statistically significant when compared to thagt in the control group. Tables, charts and photographs illustrate the results of this study.