A Study of Variations in the Origin of Obturator Artery in the Human Cadavers (South Indian Population) (original) (raw)
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Anatomical study of the origin of obturator artery in Indian cadavers
Indian Journal of Clinical Anatomy and Physiology, 2022
Background and Aim: Obturator artery (OA) originates from the anterior division of the internal iliac artery (IIA) and gives various branches to the pelvic cavity, medial compartment of the thigh, and hip joint. Studies in literature illustrate variable origin from the posterior division of the IIA, external iliac artery (EIA), or the branches of both the IIA and EIA. Understanding the pelvic vascular anatomy pertaining to the OA is crucial in averting the risk of its injury in pelvic surgeries. Present study reports on the variant anatomy of the origin of the OA in the Indian population. Materials and Methods: The study included 61 specimens from 25 formalin-embalmed cadavers (male-19, female-6) and 11 hemipelvis (male-9, female-2) utilized for undergraduate teaching in the Department of Anatomy. After dissecting the peritoneum and mobilizing the pelvic organs, the origin of OA was examined for variations. Result: The OA originated from the IIA in 83.61%. It was a branch from the anterior division of the IIA in 65.58% and the posterior division in 18.03%. OA was also given off at the site of the bifurcation of IIA into anterior and posterior divisions in 3.28%, from EIA in 4.92%, from an inferior epigastric artery (IEA) in 8.2%, and from the inferior gluteal artery and umbilical artery in 1.64% each. Conclusion: This study recognizes the variant anatomy of the origin of the OA. Anticipating these variations will be valuable in pelvic surgeries and laparoscopic procedures such as herniorrhaphy to avoid any untoward traumatic haemorrhage. This is an Open Access (OA) journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
Variability of the obturator artery and its surgical implications in a South Indian population
European journal of anatomy, 2013
SUMMARY The obturator artery (OBA) is an artery of numerous variations and also of surgical significance. Although it is usually a branch of the internal iliac artery, it may also originate from the external iliac system. This study was aimed at studying the variations of the OBA in its origin, the gender and the side differences in South Indian population. Relation of the OBA of external iliac origin to the femoral ring was also noted in view of its clinical significance. The study was done on 116 pelvic halves obtained from 58 cadavers. The OBA revealed considerable variations in its origin, course and relation to the femoral ring. It took origin from the external iliac artery and its branch, the inferior epigastric artery in 39.7%, inclusive of its dual origin from the external and internal iliac systems. Bilateral origin of the OBA from the external iliac system was noted in 22.4%. It was found to be placed lateral to the femoral ring in 78.2% and it was medial in 21.7% of the s...
Variability in the origin of the obturator artery
Clinics (São Paulo, Brazil), 2009
General surgeons dealing with laparoscopic herniorrhaphy should be aware of the aberrant obturator artery that crosses the superior pubic ramus and is susceptible to injuries during dissection of the Bogros space and mesh stapling onto Cooper's ligament. The obturator artery is usually described as a branch of the anterior division of the internal iliac artery, although variations have been reported. The present study was conducted on 98 pelvic halves of embalmed cadavers, and the origin and course of the obturator artery were traced and noted. In 79% of the specimens, the obturator artery was a branch of the internal iliac artery. It branched off at different levels either from the anterior division or posterior division, individually or with other named branches. In 19% of the cases, the obturator artery branched off from the external iliac artery as a separate branch or with the inferior epigastric artery. However, in the remaining 2% of the specimens, both the internal and t...
Variation in the origin of obturator artery
IP Innovative Publication Pvt. Ltd, 2019
Introduction: An ideal method of exploring the surgical anatomy and the variations and anomalies is the human cadaver. The anatomical region of pelvic cavity consists of a large number of organs and structures. The clear knowledge of vascular pattern and its variations is significant. The laparoscopic surgical procedures for herniorrhaphy and hernio plasty makes the study of the pelvic vascular structures very important. The obturator artery which is normally a branch of anterior division of internal iliac artery has high frequency of variations which brings attention of many anatomists and surgeons to its origin and course. Materials and Methods: The present study was conducted on 24 hemi pelvises of 12 adult cadavers, independent of age and sex dissected in the department of Anatomy, AIIMS, Rishikesh, India. During the dissection, origin and course of the obturator artery were traced. The handy instruction booklet of Anatomy by Cunningham was referred as the standard for all the dissections. Observation and Result: In 22 specimens out of the 24 pelvic halves, the obturator artery originated from the anterior division of the internal iliac artery (IIA). The variations were noted in 2 hemi pelvises. In the right and left pelvis of a cadaver, obturator artery was coming from the posterior trunk of IIA. In 91.66% specimen normal origin of the obturator artery was noted i.e. from the anterior trunk of the IIA and in 8.3% specimens it originated from the posterior trunk of IIA. Conclusion: The present study indicates that the obturator artery is frequent in showing disparity in its origin and course. It is usually described as a branch of anterior division of IIA. It can also take origin from posterior division of IIA. The surgeons who deal with the direct, indirect, femoral and obturator hernias need to have a clear knowledge about its variations and relation to the femoral ring.
International Urogynecology Journal, 2011
Introduction and hypothesis The aim of this work is to analyse the variability of the obturator artery (oa), unify previous criteria and propose a simple classification for clinical use. Methods A sample of 119 adult human embalmed cadavers was used. Origin and course of the oa in relation with the external iliac artery, internal iliac artery and inferior epigastric artery were studied. Chi-squared and t test were used for statistical comparison, and p<0.05 was considered significant. Results Based on the number of roots of origin, three different situations were observed. The oa shows a single origin (96.55%). The oa presents a double origin (3.02%), or the oa arises from three roots (0.43%). The first situation was subclassified into six types according to the oa origin. Equal vascular pattern in both hemi-pelvises was observed in 58.93%. Conclusions Almost 31% of oa passes over the superior pubic ramus implying an increased risk during some procedures.
Anatomical Variation of the Obturator Artery: A Case Report
Journal of Morphological Sciences, 2020
Introduction: introduction The obturator artery (OA) usually arises from the anterior trunk of the internal iliac artery. In the pelvis, it presents an anteroinferior course to the lateral wall, leading to the medial portion of the thigh, where it is divided into anterior and posterior branches. Through these, it provides supply to the pelvis and lower limbs structures. Although in most cases the OA follows the normal anatomical pattern, this is one of the structures with the greatest variations described. Objective: to describe morphometric aspects of a unilateral anatomical variation of the obturator artery originating from the posterior trunk of the internal iliac artery. Method: this is a case report, in which the anatomical variation was observed during a routine class in the anatomy laboratory at a university of Paraíba, Brazil, in 2018. A digital caliper was used to register morphometric aspects of the variant OA. Case report: when evaluating an adult male cadaver, a unilateral variation of the left OA was observed, which originated from the posterior division of the internal iliac artery. In the pelvis, the left OA presented an inferolateral course to the common trunk of the inferior gluteal and internal pudendal arteries. The right OA followed the anatomic-normal pattern. Conclusion An origin and course variability of the OA may have important implications in pelvic surgeries. Inadvertent lesions of this artery can lead to profuse and sometimes lethal bleeding. Therefore, it is important that surgeons and radiologists are aware of the possible variations of this structure for an adequate management of this region.
Anomalous Origin of Obturator Artery from the Internal Iliac Artery
International Journal of Morphology, 2007
RESUMEN: La arteria obturatriz es frecuentemente una rama de la división anterior de la arteria iliaca interna o uno de los ramos parietales de la arteria iliaca interna. Sin embargo, ella atrae la atención de cirujanos pélvicos, anatomistas y radiologistas por la alta frecuencia de variaciones, tanto en su origen como en su trayecto. Este reporte muestra un caso en que la arteria obturatriz se origina de la parte posterior de la arteria iliaca interna en 316 pelvis examinadas, una rara observación en la población de la India. Esta variación es correlacionada con el desarrollo y se discuten sus implicancias clínicas.
Online Journal of Health & Allied Sciences, 2018
Knowledge of variations of obturator artery is of importance during many surgical procedures of the pelvis both in male and females. Here, an extremely rare variation of obturator artery and other associated vascular variations of the pelvis are presented. These variations were noted in the right pelvic half of an adult male cadaver. The obturator artery was huge and it divided into two divisions. The lateral division accompanied the obturator nerve and vein and entered the medial compartment of the thigh by passing through the obturator foramen. The medial division gave two vesical branches, which divided and formed a tuft of arteries near the lateral side of the neck of the bladder. It also gave a slender branch, which entered the obturator foramen along with the main obturator neurovascular bundle. The medial division gave a prostatic and a penile branch. The penile branch entered the crus of the penis as the deep artery of the penis. Further the inferior gluteal and internal pudendal arteries arose through a common trunk, which divided into terminal branches in the gluteal region, below the piriformis muscle.
Study on Variations in the Origin and Branching Pattern of Internal Iliac Artery in Cadavers
Biomedical and Pharmacology Journal
The variations in blood vessels are common and have long received the attention of anatomists and surgeons. The true pelvic cavity usually refers to that part of pelvis, which has its bony walls, the sacrum and lower part of hip bone. This small area is well covered by bones and has important structures namely the pelvic viscera, pelvic floor muscles, vessels and nerves supplying it. The aim of the study was to know the branching pattern of internal iliac artery based on the Adachis classification, along with length and thickness of artery. The internal iliac artery was traced from its origin, course, branching pattern, length and thickness of the trunk of internal iliac artery was measured by using digital vernier calliper from its point of origin to bifurcation into anterior and posterior division. The length of right & left internal iliac artery ranged from 2.4 cm to 5.4 cm with average length of 3.943cm ± 0.859cm, whereas the length of left internal iliac artery ranged from 2.7c...
Morphological Analysis of the Human Internal Iliac Artery in South Indian Population
Online Journal of Health & Allied Sciences, 2011
Objectives: The accidental hemorrhage is common due to erroneous interpretation of the variant arteries during surgical procedures, hence the present study has been undertaken with reference to its morphological significance. The objectives were to examine the level of origin, length and the branching pattern of the human internal iliac artery in South Indian population. Methods: The study included 60 human bisected pelvises irrespective of their side and sex. The specimens were collected from the anatomy laboratory and were fixed with the formalin. The branching patterns were studied and demonstrated as per the guidelines of Adachi. Results: The origin of internal iliac artery was at the level of S1 vertebra in majority (58.3%) of the cases. The average length of internal iliac artery was 37 ± 4.62 mm (range, 13-54 mm). The type I pattern of the internal iliac artery was most common (83.5%) followed by types III and II. The type IV and V pattern of adachi were not observed. Conclus...