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The common iliac artery is a large artery of the abdomen paired on each side. It originates from the aortic bifurcation at the level of the 4th lumbar vertebra . It ends in front of the sacroiliac joint , one on either side, and each bifurcates into the external and internal iliac arteries .
Angiography provides important information regarding the perfusion and patency of distal arteries (e.g. femoral artery). The presence of collateral arteries in the pelvic and groin area is important in maintaining crucial blood flow and lower limb viability. However, angiography should only be used if symptoms warrant surgical intervention. [2]
The abdominal aneurysm extends down to the common iliac arteries in about 25%-30% of patients. In such cases, the iliac limbs can be extended into the external iliac artery to bypass a common iliac aneurysm. Alternatively, a specially designed endograft, (an iliac branch device) can be used to preserve flow to the internal iliac arteries.
The aortic bifurcation is the point at which the abdominal aorta bifurcates (forks) into the left and right common iliac arteries. The aortic bifurcation is usually seen at the level of L4, [1] just above the junction of the left and right common iliac veins. The right common iliac artery passes in front of the left common iliac vein.
An aneurysm is usually defined as an outer aortic diameter over 3 cm (normal diameter of the aorta is around 2 cm), [17] or more than 50% of normal diameter that of a healthy individual of the same sex and age. [9] [18] If the outer diameter exceeds 5.5 cm, the aneurysm is considered to be large. [16] The common iliac artery is classified as: [19]
Because of its similarities to deep vein thrombosis (DVT), May–Thurner syndrome is rarely diagnosed amongst the general population. In this condition, the right iliac artery sequesters and compresses the left common iliac vein against the lumbar section of the spine, [5] resulting in swelling of the legs and ankles, pain, tingling, and/or numbness in the legs and feet. [6]
The catheter has to be inserted through the right femoral artery, because in about two-thirds of cases the aortic dissection spreads into the left common iliac artery. The aortogram was previously considered the gold standard test for the diagnosis of aortic dissection, [1] with a sensitivity of up to 80% and a specificity of about 94%. [2]
In human anatomy, the iliac arteries are three arteries located in the region of the ilium in the pelvis: . Common iliac artery – forms at terminus of the aorta; External iliac artery – forms where the common iliac artery bifurcates, continues as the femoral artery at the inguinal ligament