Uterine Anatomical Flexion Degree ( Uterocervical Angle) and Intrauterine Device (IUD) Dislocation

Investigators want to find numerical determination of the degree of anatomical anterior or posterior flexion of the uterus (uterocervical angle) at the intersection of both lines using a protractor, provided that straight lines are drawn from the middle of the cervical canal and the middle of the endometrial canal in cases where the intrauterine device is found to have dislocated and and cases with no dislocation. Investigators will also measure uterus size, uterine width, cervical canal length, endometrial canal length, endometrial canal width and compare the results in both groups.