Incarcerated gravid uterus

The sacculation originating from the anterior lower segment faces the maternal umbilicus, while the uterine fundus remains in the lower posterior pelvis below the sacral promontory (inverted polarity). Concomitantly, both the bladder and the cervix are pulled into the abdominal cavity, towards the umbilicus. The cervix can be stretched to 10 cm in length or more, with the internal os located above the symphysis pubis and occasionally above the bladder.