Peritoneum covering the uterus, in the bottom of its body and is closely related to muscle layer in the lower segment of the peritoneum is mobile due to be fiber. The upper edge of the easily separable,has a whitish color peritoneum corresponds to the upper boundary of the lower uterine segment. Rear wall of the bladder is separated from the lower uterine segment with a layer of loose fiberthickness of which increases down to 1 cm or more. Lower segment uterus in the front and sides immediately adjacent to the pelvic wall, but access to laparotomy when it restricts the bladder. Voiding, usually located in the pelvic cavity. When filled bubble rises into the abdominal cavity and is located anterior to the lower segment, or that happens rarely remains in the pelvis, bulging downwards anterior vaginal wall. During labor, even emptying of the bladder lies above the pubic joints, sometimes rising by 5-6 cm above the pubis.

Topography of the lower segment of the uterus varies depending on the period of confinement. In end of pregnancy and I first stage of labor is in the lower segment of the small pelvis. At the end of period I and II early stage of labor lower segment of the uterus is entirely above the entrance to the small pelvis.

Thus, when laparotomy is necessary to clearly define the orientation of the body uterus, the lower segment, the adjacent part of the bladder and vesico - uterine folds, taking into account the asymmetry of the uterus. Mushroom cesarean section with a transverse incision of the lower segment uterus.Operation intraperitoneal cesarean section with transverse incision of the lower segment is the procedure of choice in modern obstetrics. During the operation can allocate 4 points: 1) laparotomy, 2) opening lower segment of the uterus, and 3) extraction of the fetus and afterbirth, 4) stitching the wall uterus and layerwise celiorrhaphy. Let us consider the technique of the operation (Fig. 127).