A Statistical Study of the Branching of the Human Internal Iliac Artery.

Abstract

This study is based on the dissections of 645 pelvic halves of Japanese cadavers. The branching of the internal iliac artery was classified according to Adachi's classification (1928) , and the data was compared with previous reports. Type I was predominant in this , as well as, in previous studies. During the course of the present study, some branching forms were different from the types in Adachi's classification. Therefore, this classification was modified into 5 types and 19 groups. Type I-Group 1 was most frequently observed in the modified Adachi's classification, however, the frequency was less than 50% (46.8%). To clarify the basic branching pattern of the original internal iliac artery and to simplify the classification for medical purposes , a new classification system was designed. The superior gluteal, inferior gluteal and internal pudendal arteries were defined as the major branches of the internal iliac artery, and the umbilical artery was excluded from this group. The branching of the internal iliac artery was classified into 4 groups. Almost 80% of the present specimens were included in Group A of the new classification , namely, the internal iliac artery dividing into two major branches, the superior gluteal artery and the common trunk of the inferior gluteal and internal pudendal arteries. This type of branching seemed to be the basic branching pattern for the original internal iliac artery.

Anatomical Study on the Variations in the Branching Pattern of Internal Iliac Artery

“…So for a successful ligation of the IIA, the operating surgeon should be cognizant of the level of origin, the level of division of the artery; unilateral or bilateral ligation of the IIA can be lifesaving in patients with massive postpartum hemorrhage, after vaginal and abdominal hysterectomy; in massive broad ligament hematoma, cervical carcinoma, and retroperitoneal bleeding after pelvic fractures, bilateral IIA ligation is done. In the present study, in 40 % specimens, variant branches were observed [6][7][8].…”

“…Yamaki et al [8], in their study based on the dissection of 645 pelvic halves of Japanese cadavers, the branching of the IIA was classified into four groups. In almost 80 % of the specimens, the IIA is dividing into two major branches, the superior gluteal artery and the common trunk for the inferior gluteal and internal pudendal arteries [8].…”

“…In almost 80 % of the specimens, the IIA is dividing into two major branches, the superior gluteal artery and the common trunk for the inferior gluteal and internal pudendal arteries [8].…”

Pelvic trauma and vascular emergencies

“…This gives rise to the visceral branches (uterine artery, superior and inferior vesical arteries, middle and inferior rectal arteries) and the parietal branches (ilio-lumbar artery, lateral sacral artery, superior and inferior gluteal arteries, obturator artery and internal pudendal artery) [37,38] (Figs. 2 and 3).…”

Prostatic Arterial Supply: Anatomic and Imaging Findings Relevant for Selective Arterial Embolization

“…Few studies have addressed radiologically the anatomy of the male pelvic arterial system (14,15) and PAs (16). Knowledge of the male pelvic and PA anatomy is needed to safely perform PAE.…”