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Which part of the pubic bone is it?
The pubic body constitutes the anterior lower part of acetabulum and is relatively thick. It extends from the anterior medial side to the superior pubic branch, which bends downward and migrates to the inferior pubic branch. The upper edge of the superior pubic branch is thin and sharp, which is called pubic comb. It is continuous with the iliac arch line backwards, and finally bulges round forward, which is a pubic nodule. The pubic bone is in the lower part of the lower abdomen and the inner thigh.
Pubic tubercle is an important body surface sign, which extends inward to the upper edge of pubic symphysis and also has a crest called pubic crest. On the inner side of the transition between the upper and lower branches of the pubic bone, there is an oval rough surface called pubic symphysis. The big hole surrounded by pubic bone and ischium is called obturator. The pubic bone constitutes the anterior lower part of the hip and is divided into two branches: the upper branch and the lower branch. Body composition anterior inferior acetabulum 1/5. The upper edge of the joint with ilium is rough and raised, which is called iliopubic eminence. The superior pubic branch extends forward and inward from here, and its end turns sharply downward to become the inferior pubic branch.
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Extended data:
Composition and function of pubic symphysis;
A very small articular cavity did not appear in the upper part of the pubic symphysis fibrocartilage until the age of 9, and it was larger in women. The angle formed below the pubic symphysis is acute in men, about 70 ~ 75, and obtuse in women, which is called pubic arch, with an average of 87.5. The ligament around the joint is very weak, and the real connection is the fibrocartilage disc in the joint.
Similar to fibrocartilage intervertebral disc, there is only a small synovial cavity and no nucleus pulposus. The structural characteristics of pubic symphysis show that pubic fracture often occurs when violent impact occurs, and pubic symphysis separation is not easy to occur. The pubic symphysis can move slightly, such as rotation and displacement, and move at the same time with sacroiliac joint and hip joint. The pubic symphysis can be separated in the third trimester of pregnancy and delivery.
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/baike . Baidu . com/item/% E8 % 80% BB % E9 % AA % A8 % E8 % 8 1% 94% E5 % 90% 88/ 17 12 15。 Baidu encyclopedia-pubic symphysis
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