The position of the uterus is anteverted and anteflexed. That is to say, when a woman is upright, the uterus is almost horizontal and slightly bent forward, the fundus of the uterus is on the bladder, the cervix is backward toward the lower end of the sacrum, and the external os of the cervix is approximately at the level of the ischial spine.
How do you maintain this position? It turns out that the uterus has 4 pairs of ligaments, as well as the muscles and fascia of the pelvic floor, which keep the uterus in its normal position.
These four pairs of ligaments are: ① Round ligament. It originates from the front of the two horns of the uterus and ends at the front of the labia majora. Its function is to keep the fundus of the uterus in an forward position. ②Broad ligament. It is a pair of wing-shaped peritoneal folds, starting from both sides of the uterus and reaching the pelvic wall. ③Cardinal ligament. At the lower part of the broad ligament, running transversely between both sides of the cervix and the pelvic wall, is a pair of tough smooth muscle and connective tissue fiber bundles, also known as the transverse cervical ligament. It is an important tissue that fixes the position of the uterus. ④Uterosacral ligament. From the upper side behind the cervix, go around the rectum to both sides and reach in front of the 2nd and 3rd sacral vertebrae. The ligament contains smooth muscle and connective tissue. It is short, thick and strong. It can pull the cervix backward and upward, indirectly keeping the uterus in the forward position.
Therefore, the maintenance of the normal position of the uterus depends on the support of the above four pairs of ligaments and the muscles and fascia of the pelvic floor.
This article is provided by Baidu Reading and is excerpted from \”The Clear \”Conception\” Plan\” Author: Sun Jianqiu and Xie Yingbiao