Corona Mortis: anatomical and surgical description on 60 cadaveric hemipelvises.

Túlio Fabiano De Oliveira Leite,Lucas Alves Sarmento Pires,Júlio Guilherme Silva,Carlos Alberto Araujo Chagas,Kiyoshi Goke

doi:10.1590/0100-69912017006001

Abstract

to report the prevalence of arterial corona mortis and to describe its surgical and clinical applicabilities. We dissected 60 hemipelvises (50 men and 10 women) fixed in a 10% formalin solution for the purpose of gathering information on corona mortis. We measured the caliber and length of the obturator artery and its anastomotic branch with the aid of a digital caliper and submitted the data to statistical analyzes and comparisons with the GraphPad Prism 6 software. arterial corona mortis was present in 45% of the studied sample. The most common origin of the obturator artery was the internal iliac artery; however, there was one exceptional case in which it originated from the femoral artery. The caliber of the anastomotic branch was on average 2.7mm, whereas the caliber of the obturator artery was 2.6mm. the vascular connections between the obturator, internal iliac, external iliac and inferior epigastric arterial systems are relatively common over the upper pubic branch. The diameter and a trajectory of the anastomotic artery may vary. Thus, iatrogenic lesions and pelvic and acetabular fractures can result in severe bleeding that puts the patient's life at risk.

Highlights

The obturator artery (OA) has a very variable origin, usually originating from the anterior wall of the internal iliac artery (IIA)
Vascular formation during the embryonic period consists of the appearance of vessels and anastomoses that may or may not persist during ontogenesis[10]
During the fifth week of development, the umbilical arteries form a new connection to the fifth pair of lumbar segmental arteries, and form the IIA, the EIA, and the common iliac artery

Summary

Introduction

The obturator artery (OA) has a very variable origin, usually originating from the anterior wall of the internal iliac artery (IIA). In its trajectory the OA distributes several collateral branches: two muscular branches (for the iliac and internal obturator muscles), a pubic branch (which runs on the posterior surface of the pubis body to anastomose with the ipsilateral branch), a bladder branch (to the posterior face of the urinary bladder) and an anastomotic branch[1,2]. This latter deserves special attention due to its trajectory, as it crosses the upper branch of the pubis (UBP) perpendicularly and anastomoses with the inferior epigastric artery (IEA)[1,2]. The IEA gives a branch to the spermatic cord, a suprapubic branch and an anastomotic branch (for the OA)[1,2,4]

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Conclusion