Acta neurochirurgica
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Acta neurochirurgica · Jan 1985
Case ReportsMicrosurgical anatomy around the origin of the ophthalmic artery with reference to contralateral pterional surgical approach to the carotid-ophthalmic aneurysm.
The supraclinoid segments of the internal carotid artery (ICA) and their surrounding structures were examined under magnification in 25 adult cadavers. Attention was paid to anatomical variations and relationships concerning ipsilateral and contralateral pterional microsurgical approaches to these regions, especially to the origin of the ophthalmic artery. Eighty-four percent of the ophthalmic arteries arose from the supraclinoid segment of the ICA. ⋯ This study supports the usefulness of the contralateral pterional approach to the origin of the ophthalmic artery and the medial aspect of the supraclinoid segment of the ICA. This approach could be useful in certain cases of carotid-ophthalmic aneurysm. The authors' experience with the contralateral pterional approach to carotid-ophthalmic aneurysms is also described.
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Among retroperitoneal injuries in lumbar disc surgery ureteral transection is a rare complication and only 8 cases have been reported so far. They are analysed and a ninth case is added and described. ⋯ The anatomical relationship of the lumbar spine and retroperitoneal structures is illustrated by CT scans. Factors contributing to these injuries and ways of recognizing and preventing complications are discussed.