Study of Posterior Division of Internal Iliac Artery.

Background: The internal iliac artery originates from the common iliac artery at the level of sacroiliac joint. The internal iliac artery descends posterior to the greater sciatic foramen thereby dividing into anterior and posterior divisions. The posterior division of the internal iliac artery is known to give rise to three main branches i.e. iliolumbar artery, lateral sacral artery. Accidental haemorrhage is common during erroneous interpretation of anomalous blood vessels. The knowledge of the normal and the abnormal anatomy of the branches of the internal iliac artery is essential for obstetric surgeons. Methods: 50 adult human pelvic halves were procured from embalmed cadavers of J.J.M. Medical College and S.S.I.M.S & R.C, Davangere, Karnataka, India for the study. Results: Out of 50 specimens, ilio-lumbar artery took origin from posterior division, directly in 22 specimens (44%), with obturator artery in 5 specimens (10%) and with superior gluteal artery in 2 specimens (4%). From anterior division, with obturator artery in 6 specimens (12%) and with inferior gluteal artery in 1 specimen (2%). From common trunk, as direct branch in 10 specimens (20%), with lateral sacral artery in 1 specimen (2%), with vertebral branch in 1 specimen (2%), with superior gluteal artery in 1 specimen (2%) and was found to be absent in 1 specimen (2%). Posterior division of internal iliac artery given origin directly to superior gluteal artery in 44 specimens (88%), with ilio-lumbar artery in 1 specimen (2%), with obturator artery in 2 specimens (4%). Lateral sacral artery from posterior division was observed in 38 specimens (76%) and unpaired origin was observed in 7 specimens (14%). Conclusion: Internal iliac artery supplies the pelvic viscera and musculature the knowledge of its branches helpful in pelvis surgeries.

Angiographic study of the feeding arteries of sacral tumors：analysis of 27 cases / 介入放射学杂志

Objective To study the feeding arteries of sacral tumors with digital substraction angiography (DSA). Methods A total of 27 patients with sacral tumors, who were encountered at authors’ hospital during the period from January 2006 to December 2012 , were enrolled in this study. DSA of abdominal aorta, bilateral internal iliac arteries, median sacral artery and lumbar arteries was performed in all patients. The origins, branches of the feeding arteries were determined, and the results were analyzed. Results Of the 27 cases with sacral tumors, DSA demonstrated median sacral artery in 20 (20 arteries in total), lateral sacral artery in 22 (36 arteries in total), ilio-lumbar artery in 18 (27 arteries in total), lumbar artery in 10 (15 arteries in total), inferior gluteal artery in 3 (3 arteries in total) and superior gluteal artery in 2 (2 arteries in total). Conclusion In our series, the blood supply of the sacral tumors is mainly from the median sacral artery, lateral sacral artery, ilio-lumbar artery and lumbar artery. Occasionally, superior and inferior gluteal arteries also participate in the blood supply of the sacral tumors. For the evaluation of sacral tumors, attention should be paid to the presence of rare feeding arteries.

Spinal Dural Arteriovenous Fistula with Supply from the Lateral Sacral Artery: Case Report and Review of Literature

The authors report a case of spinal dural arteriovenous fistula (SDAVF) that is supplied by a lateral sacral artery. A 73-year-old male presented with gait disturbance that had developed 3 years ago. Spinal magnetic resonance imaging suggested a possible SDAVF. Selective spinal angiography including the vertebral arteries and pelvic vessels showed the SDAVF fed by left lateral sacral artery. The patient was subsequently treated with glue embolization. Three days after the embolization procedure, his gait disturbance was much improved.

Spinal Dural Arteriovenous Fistula from Lateral Sacral Artery

The authors report a rare case of spinal dural arteriovenous fistula (DAVF) that supplied by lateral sacral artery. A 71-year-old female initially presented with paraparesis and boring pain on lower extremities. Though magnetic resonance imaging suggested a possible spinal DAVF, routine angiographic evaluation was negative. Thereafter, the patient deteriorated progressively and became paraplegic. Definite diagnosis was made through selective pelvic angiogram. The patient was subsequently treated with embolization using mixture of glue and lipiodol. On three months after the embolization, the patient remained paraplegic, but her leg pain was improved remarkably.

Lateral sacral artery in Thais.

In a dissection of 372 pelvic halves of Thai adult cadavers, the lateral sacral arteries were classified into seven types according to the numbers of the vessels and their distribution to the ventral sacral foramina. The percentage of type one to seven were 23.7, 69.6, 0.5, 4.6, 0.5, 0.8 and 0.3 respectively.