Welcome to International Journal of Anatomy and Research

Type of Article: Original Research

Year: 2016 | Volume 4 | Issue 1 | Page No. 2062-2068

Date of Publication: 31-03-2016

DOI: http://dx.doi.org/10.16965/ijar.2016.141

SURGICAL SIGNIFICANCE OF INFERIOR MESENTERIC ARTERY AND ITS BRANCHING PATTERN

Raja Reddy Gangam *¹, Sindhura Sadanandam Sharon ².

^*1 Associate Professor, Department of Anatomy, Rajiv Gandhi Institute of Medical Sciences (RIMS), Adilabad, Telangana, India.
² Assistant Professor, Department of Anatomy, Rajiv Gandhi Institute of Medical Sciences (RIMS), Adilabad, Telangana, India.

Address: Dr. Raja Reddy Gangam, M.D. Associate Professor, Department of Anatomy, Rajiv Gandhi Institute of Medical Sciences (RIMS), Adilabad-504001. Telangana, India. Mob: 91 9441490535
E-Mail:gangamrajareddy@gmail.com

Abstract

Introduction: Inferior Mesenteric Artery (IMA) is a major anterior branch of the abdominal aorta and is responsible for supplying arterial blood to the organs of the hind gut. The present study was conducted to emphasize branching pattern of the inferior mesenteric artery, anatomical variations and its surgical significance. Knowledge of the arterial supply of the gut is essential for anatomists and surgeons for the safety and survival of patients in standard operative procedures.
Materials and Methods: This study was conducted on 100 cases out of which seventy five were adult cadavers (40 - 70 years) and 25 fetuses (28 – 38 weeks) in the Dept. of Anatomy, Gandhi Medical College, Musheerabad, Secunderabad, Telangana, India.
Results: the most common branching pattern of inferior mesenteric artery was into LCA in 74 (98.66%) cadavers and common sigmoid trunk gave off 3-4 sigmoid arteries. LCA was absent in one (1.33%) case of adult and one (4%) case of fetuses. Bifurcation of LCA has taken place close to its origin in 20% cases and in another 80% of the cases close to its splenic flexure. In 10.67% cases 1st sigmoid has taken origin from LCA and formed loop of anastomoses with ascending branch of LCA. Sigmoid arteries were 1-4 in number with variations observed in the mode of origin and their number. In 20% of cases one sigmoid has taken origin directly from IMA which later continued as superior rectal artery.      
Conclusion: The detailed knowledge of anomalous branching pattern of IMA and its distribution is of immense significance for surgeons particularly, when performing laparoscopic abdominal surgery. Knowledge of the arterial supply of the gut is essential for anatomists and surgeons for the safety and survival of patients in standard operative procedures.
Key words: Abdominal Aorta, Inferior Mesenteric Artery, Sigmoid Arteries, Superior Rectal Artery. 

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Raja Reddy Gangam, Sindhura Sadanandam Sharon. SURGICAL SIGNIFICANCE OF INFERIOR MESENTERIC ARTERY AND ITS BRANCHING PATTERN. Int J Anat Res 2016;4(1):2062-2068. DOI: 10.16965/ijar.2016.141