AN OBSERVATION ON THE RAMIFICATION OF THE A. ILIACA INTERNA AND EXTERNA OF CHINESE MALE ADULTS
- VernacularTitle:国人成年男子髂内、外动脉分支的观察
- Author:
Jiaqing YAO
;
Hengru DAI
;
Daojun DENG
;
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1955;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
The branches of the a. iliaca int. and ext. of 60 Chinese male adult cadavers (120sides) were studied and the findings are as follows: 1. The average length of the internal iliac trunk is 4.35?0.17cm,?=?1.34cm,in the left, and 4.56?0.21cm,?=?1.63 cm in the right. It is inversely proportionalto the average length of the common iliac artery. 2. The patterns of the branching of the superior, inferior gluteal and internalpudendal artieries may be classified into 5 types: type Ⅰ is present in 63 sides (cases)(52.5?4.55%); type Ⅱ and Ⅲ occur in 26 cases (21.67?3.76%); type Ⅳ occursin 4 cases (3.33?1.64%) and type Ⅴ is present only in 1 side (0.85 0.83%). 3. In most of the cases, the superior gluteal artery passes between the lumbosacraltrunk and the first sacral nerve (79.83%), while the inferior gluteal (66.67%) and theinternal pudendal artery (62.19%) usually pass between the second and third sacralnerve into the gluteal region. A few of these vessels may divide into 2 or 3 branchesbefore leaving the pelvis. 4. The accessory pudendal artery is present in 13 cases (10.83?2.83%). 5. The obturator artery originates from the internal iliac artery in 102 cases(85.0?3.26%), most of them spring from the anterior trunk of the internal iliacartery. In the other 18 cases, 2 spring directly from the external iliac artery (1.67?1.17%), 13 from the inferior epigastric artery (10.83?2.85%), and 3 have doubleorigins (2.5?1.42%), in which the 2 branches spring separately from the internal iliacand inferior epigastric artery. These abnormal obturator arteries occur in 14 cadavers(23.33?5.44%). 6. The iliolumbar artery is present in 80 cases (66.67?4.30%) as a singlebranch, in 37 cases (30.83?4.2%) with 2 separate branches and in 3 cases (2.5?1.43%) with 3 branches. It has various origins, most of them spring from the maintrunk or from the posterior trunk of the internal iliac artery. 7. The lateral sacral artery occurs in 54 cases (45.0?4.54%) as a single branch,in 57 cases (47.5?4.55%) with 2 branches, and in 9 cases (7.5?2.44%) with 3branches. Its origin is comparatively constant, usually arising from the posterior trunkof the internal iliac artery. 8. Most of the superior vesical arteries spring from the root of the umbilical artery.The number of branches of this vessel varies from 1 to 6, but most of them have 1 (46cases, 38.33?4.43%) or 2 (45 cases, 37.5?4.42%) branches. 9. The inferior vesical artery has 1--3 branches. Most of them have a singlebranch (104 cases, 86.67?3.1%), it springs commonly from the anterior trunk of theinternal iliac artery or from the internal pudendal artery. 10. The deferent artery springs in 85 cases (70.83?4.15%) as a single branch,and in 35 (29.17?4.15%) with 2 branches. In the single-branch type it springsmostly from the root of the umbilical artery, and in the two-branch type both springcommonly from the superior vesical artery. 11. The inferior rectal (middle hemorrhoidal) artery is present only in 106 cases(88.33?2.93%), most of them spring from the internal pudendal and inferior glutealarteries. In 3 cadavers (5.0?1.99%) they spring from the middle sacral artery sym-metrically. 12. In 103 cases (85.85?3.32%) the inferior epigastric artery springs indepen-dently from the external iliac artery, in 16 cases (13.33?3.13%) it springs as a com-mon trunk with the obturator artery, and in one side (0.83?0.83%) with the medialfemoral circumflex artery. Its origin-site on the external iliac artery is proxmal to theinguinal ligament in 69 cases (57.5?4.51%) with an average distance of 0.95?0.10cm,?=?0.59cm in the left, and 0.73?0.08 cm,?=?0.43 cm in the right; in 43cases (35.83?4.67%) the origin-site is just behind the ligament; and in 8 cases(6.67?2.28%) it is distal to the ligament, its average distance is 0.48?0.09 cm,?=?0.18 cm in the left, and 0.45?0.11 cm,?=?0.22 cm in the right. 13. The deep iliac circumflex artery, a single branch, is present in 115 cases(95.83?1.82%), the remaining 5 cases (4.17?1.82%) have 2 branches. In 54cases (45.0?4.54%) its origin-site is just behind the inguinal ligament; in 36 cases(30.0?4.18%) is proximal to the ligament with an average distance of 0.56?0.09cm,?=?0.38 cm in the left, and 0.61?0.09 cm,?=?0.35 cm in the right; and in25 cases (20.83?3.72%) it is distal to the ligament, the average distance shows0.62?0.12 cm,?=?0.45 cm in the left, and 0.69?0.12 cm,?=?0.41 cm in theright.
