In current day practice of medicine, diseases affecting large bowel and its blood supply are commonly seen. Penetrating abdominal injuries caused due to road traffic accidents and direct violence (homicide), are the common cause of large bowel injuries. Most abdominal vascular injuries result from penetrating trauma and are associated with other abdominal injuries.

Vascular injuries are much more common after abdominal gunshot wounds (25% of patients) as compared with stab wounds (10%). Inferior mesenteric artery is one of the three ventral branches of abdominal aorta which supplies the hindgut. It arises from front of aorta at the level of third lumbar vertebra (L3). Branches of inferior mesenteric artery are:– 1.left colic artery .  2. sigmoid arteries.  3. superior rectal artery as a continuation of inferior mesenteric artery. The parts of large intestine supplied by inferior mesenteric artery are namely, left one third of transverse colon, the entire descending and sigmoid colons, the rectum and upper part of the anal canal up to the pectinate line.