The anatomical knowledge of structures such as vessels, nerves and the skull base is essential for endonasal surgeries to be performed safely. The anterior ethmoidal artery is an important anatomical landmark that has three segments: intraorbital, intranasal and intracranial. Inadvertent injuries to this structure may evolve to blindness and cerebrospinal fluid fistula. This study aims to provide the mean distance between the anterior ethmoidal artery and the middle turbinate axilla, through the analysis of the coronal section of 66 CT scans of facial sinuses in patients over 18 years of age undergoing endonasal surgery at IPO Hospital. Thirty-eight patients were male (57.57%) and 28 were female (42.42%). The mean age for males was 37 years; for females it was 38.1 years. The mean distance for males was 23.9 mm on the right side and 24.0 mm on the left side. For females, the mean was 22.7 mm on the right side and 23.9 mm on the left side. We concluded that the tomographic measurement of the anterior ethmoidal artery to the middle turbinate axilla is easy to obtain preoperatively, and it contributes for endonasal surgeries to be performed safely.
Campos CSM, Martins RF. Tomographic study of the mean distance between the anterior ethmoidal artery and the middle turbinate axilla for guidance in endonasal surgeries. J Contemp Dis Adv Med. 2022 Sep-Dec;1(3):9-14.