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The tethering of the aorta by the ligamentum arteriosum makes the site prone to shearing forces during sudden deceleration. [8] A study of people who died after traumatic aortic rupture found that in 55–65% of cases the damage was at the aortic isthmus and in 10–14% it was in the ascending aorta or aortic arch. [4]
The ligamentum arteriosum (arterial ligament), also known as Botallo's ligament, Harvey's ligament, and Botallo's duct, [1] is a small ligament attaching the aorta to the pulmonary artery. [clarification needed] It serves no function in adults but is the remnant of the ductus arteriosus formed within three weeks after birth. [clarification needed]
Of the thoracic aortic injuries the ligament arteriosum is the most common location followed by the portion of the aorta after the origin of the left subclavian artery. [10] The most common mechanism leading to thoracic aortic injury is a motor vehicle collision.
Aortic rupture is the breakage of all walls of the aorta, the largest artery in the body. Aortic rupture is a rare, extremely dangerous condition that is considered a medical emergency . [ 1 ] The most common cause is an abdominal aortic aneurysm that has ruptured spontaneously.
The vast majority of aortic dissections originate with an intimal tear in either the ascending aorta (65%), the aortic arch (10%), or just distal to the ligamentum arteriosum in the descending thoracic aorta (20%). [clarification needed] As blood flows down the false lumen, it may cause secondary tears in the intima.
ligamentum arteriosum: extra-hepatic portion of the fetal left umbilical vein: ligamentum teres hepatis (the "round ligament of the liver"). intra-hepatic portion of the fetal left umbilical vein (the ductus venosus) ligamentum venosum: distal portions of the fetal left and right umbilical arteries: medial umbilical ligaments
Because there is a risk of thromboembolic complications and spontaneous rupture, surgical repair is usually recommended early on after discovery. Innominate artery aneurysms often present with signs of innominate artery compression syndrome and have a very high risk of rupture. [10] The majority of IA aneurysms are due to atherosclerosis.
The tendon of Todaro is a continuation of the Eustachian valve of the inferior vena cava and the valve of the coronary sinus.Along with the opening of the coronary sinus and the septal cusp of the tricuspid valve, Koch's triangle is made up.