What Is a Lunotriquetral Ligament?

Uterine ligament: Uterine ligament is one of the uterine ligaments. It is a pair of long round cables consisting of smooth muscle and connective tissue. Starting from the lateral edge of the uterus, anteriorly below the fallopian tube uterine opening. Covered by the anterior layer of the broad ligament of the uterus, it goes to the anterolateral side, passes through the inguinal canal, and terminates in the upper and lower labia majora. To maintain the main structure of the anteversion of the uterus.

Uterine ligament: Uterine ligament is one of the uterine ligaments. It is a pair of long round cables consisting of smooth muscle and connective tissue. Starting from the lateral edge of the uterus, anteriorly below the fallopian tube uterine opening. Covered by the anterior layer of the broad ligament of the uterus, it goes to the anterolateral side, passes through the inguinal canal, and terminates in the upper and lower labia majora. To maintain the main structure of the anteversion of the uterus.

Chinese name

Uterine round ligament

Shape

Flat cable

full length

10 ~ 12cm

Constitute

Smooth muscle and connective tissue

Overview of Uterine Ligaments

1. Uterine ligament: Uterine ligament is one of the ligaments that maintains the position of the uterus. The uterine round ligament is composed of smooth muscle and connective tissue. It starts from the outer upper corner of the uterus, runs along the side of the pelvis between the two layers of the broad ligament, enters the inguinal canal through the abdominal ring, and then comes out of the subcutaneous ring, dividing into most fiber bundles, ending at the phallus and labia majora. The main function is to maintain anteversion of the uterus.

2. Wide uterine ligament: one of the uterine ligaments. On both sides of the uterus, there are frontal positions, divided into two layers, the medial edge is attached to the uterus and moves to the peritoneum of the front and back of the uterus; the lateral edge is connected to the side wall of the small pelvis and moves to the peritoneum of the pelvis; The margin is attached to the pelvic floor; the upper margin is free, and the fallopian tube is enclosed in it. The anterior layer of the broad ligament covers the round ligament of the uterus, and the posterior layer covers the ovary. There are blood vessels, lymphatic vessels, nerves and connective tissue between the two layers, which can limit the lateral displacement of the uterus.

3. Uterine ligaments: refers to the broad ligaments, round ligaments, and uterine diaphragm ligaments that stretch on both sides of the uterus. Has the effect of fixing the uterus. The broad ligament is two wing-like structures that extend from the sides of the uterus to the pelvic wall. The two divide the pelvic cavity into anterior and posterior intervals. Each broad ligament is a peritoneal fold that surrounds various structures. It has upper, lateral, inferior, and middle edges. The inner edge of the upper edge forms 2/3 of the fallopian tube mesangium and is attached to the fallopian tube. The outer third of the upper edge is umbrella-shaped from the fallopian tube. The end stretches to the pelvic wall, forming the ovarian suspension ligament, and the ovarian artery passes through. The broad ligament below the fallopian tube is the fallopian tube mesentery, which consists of two layers of peritoneum with some loose connective tissue in it, and sometimes the ovarian crown is visible. The ovarian crown is equivalent to the male epididymal head, the bottom of the broad ligament is very thick, and it is connected to the connective tissue of the pelvic floor through which the uterine blood vessels pass; the thickest part of the broad ligament of the uterus is called the main ligament. Uterine sacral ligament is composed of connective tissue, which is firmly combined with the upper uterine cervix and the lateral edge of the uterus. This part contains the uterine blood vessels and the lower ureter. The straight section of the broad ligament of the lower part of the uterus is triangular, and the uterine blood vessels are above its wide baseline. It is widely continuous with the connective tissue near the cervix, which is the para-uterine tissue. The straight section of the upper part of the broad ligament shows three branches surrounding the fallopian tube, uterine-ovary ligament, and round ligament. Round ligaments extend from the front and sides of the uterus to the fallopian tube. Each round ligament is connected to the broad ligament in a fold of the peritoneum and extends upward and outward through the groin, ending in the labia majora. In the upper part, the diameter of the non-pregnant round ligament is 3 ~ 5mm, which is composed of smooth muscle and connective tissue directly connected to the uterus, which is equivalent to the testicular lead band. The uterine sacral ligament extends from the back and upper part of the cervix, surrounds the rectum, and then attaches to the second and third sacral fascia. It consists of connective tissue and muscle and is covered by the peritoneum, forming a rectal uterine depression. And apply traction to the cervix to help the uterus stay in its normal position. In addition, some scholars also classified the main ligament of the uterus into the uterine fixation device.

Anatomical structure of round ligament of uterus

1. Uterine circular ligament: Uterine circular ligament is a round cord, composed of smooth muscle and connective tissue, with a total length of about 12 to 14 cm. It starts at the upper part of the lateral edge of the uterus and slightly below the fallopian tube attachment. Initially forward and outward, across the bladder vessels, obturator vessels and nerves, umbilical artery cords, and external iliac vessels, etc., pass the abdominal ring of the inguinal canal, bypass the beginning of the inferior abdominal wall artery, enter the inguinal canal, and exit the subcutaneous ring. Stops in the subcutaneous tissues of the labia majora and penis.

2. Wide uterine ligament: It is a double-layered peritoneal fold that extends from the lateral edge of the uterus to the lateral side of the pelvis. It is approximately free from the upper edge of the square and contains the fallopian tubes. The lateral edge is attached to the pelvis and the lower edge is attached to the pelvic floor. Except for the mesentery that forms the fallopian tube (peritoneal folds between the fallopian tube and the ovarian mesentery) and the mesangium (peritoneal folds between the ovary and the broad ligament), most of the rest are called the mesentery, with fat-containing looseness. Connective tissue, known as para-uterine tissue, is especially developed around the cervix. This tissue is connected down to the paravaginal tissue, followed by the parabladder tissue, and then the pararectal tissue. There are abundant venous plexuses in the uterine cervix and para-uterine tissue on both sides of the body.

Morphological structure of uterine round ligament

The round ligament of the uterus is a round cord, consisting of smooth muscle fibers and connective tissue, and is 12-14 cm long. Starting from the side of the uterus, the anterior part of the uterine end of the fallopian tube is located in the broad ligament of the uterus, along the pelvic wall forward and above the front of the external iliac vessels, through the posterolateral side of the blood vessels below the abdominal wall, through the abdominal ring, through the inguinal canal, and the shallow ring Later, its fibers stop at the subcutaneous fascia of the genitals and labia majora respectively, which is one of the main structures to maintain anteversion and forward flexion of the uterus. The uterine round ligament is a pair of nearly round muscle fiber bundles covered with peritoneum. It starts from the front and bottom of the fallopian tubes at the two corners of the uterus, and extends forward and outward. It stops in the pupa and the labia majora and labia minora through the inguinal canal, and has the effect of maintaining the anteversion of the uterus.

Uterine ligament related diseases

Uterine round ligament tumor: A tumor near the tissues of the female reproductive organs refers to the ligaments, connective tissues that support the reproductive organs, and the blood vessels, nerves, and lymphoid tissues contained in it, or metastases from other parts. Benign or malignant tumors. Primary tumors are rare, and can be divided into benign and malignant ones, with benign ones being more common. Metastatic tumors are more common than primary, and they are mostly metastatic from the ovaries or uterus. Common tumors of the ligament include uterine round ligament tumor, broad ligament tumor, and patellar ligament tumor.