Abstract：
UNASSIGNED: The location of infraorbital foramen (IOF) and the prevalence of accessory IOF vary among different populations. It may lead to infraorbital nerve (ION) blockage during surgery. This study aimed to assess the IOF location and AIOF frequency in Iranian people.
METHODS: In this retrospective cross-sectional study, 500 paranasal sinus computed tomography scans of adults were examined using the INFINITT PACS system.
RESULTS: The distance from IOF to infraorbital margin (IOM), mid-pupillary line (MPL), midsagittal line (MSL), canine eminence (CE), and skin thickness (ST) was 8.97 ± 1.79, 5.73 ± 1.84, 24.86 ± 2.23, 20.39 ± 3.47, and 10.90 ± 2.59 mm, respectively. The vertical and transverse diameters of the foramen were 3.03 ± 0.65 and 3.71 ± 0.76 mm, respectively. In addition, the shape of 63.5% of the foramina was oval. The prevalence of AIOF was 9%, and its most common location was superomedial to IOF.
CONCLUSIONS: We believe that in this study, landmarks like IOM, MPL, MSL, CE and ST could help the clinicians localize IOF and improve the ION anesthesia success rate. Furthermore, the occurrence of AIOF should be considered by physicians to reduce the chance of injuries to the infraorbital neurovascular complex.
METHODS: In this retrospective cross-sectional study, 500 paranasal sinus computed tomography scans of adults were examined using the INFINITT PACS system.
RESULTS: The distance from IOF to infraorbital margin (IOM), mid-pupillary line (MPL), midsagittal line (MSL), canine eminence (CE), and skin thickness (ST) was 8.97 ± 1.79, 5.73 ± 1.84, 24.86 ± 2.23, 20.39 ± 3.47, and 10.90 ± 2.59 mm, respectively. The vertical and transverse diameters of the foramen were 3.03 ± 0.65 and 3.71 ± 0.76 mm, respectively. In addition, the shape of 63.5% of the foramina was oval. The prevalence of AIOF was 9%, and its most common location was superomedial to IOF.
CONCLUSIONS: We believe that in this study, landmarks like IOM, MPL, MSL, CE and ST could help the clinicians localize IOF and improve the ION anesthesia success rate. Furthermore, the occurrence of AIOF should be considered by physicians to reduce the chance of injuries to the infraorbital neurovascular complex.
摘要：
■不同人群的眶下孔（IOF）的位置和辅助IOF的患病率不同。在手术过程中可能导致眶下神经（ION）阻塞。这项研究旨在评估伊朗人的IOF位置和AIOF频率。
方法：在这项回顾性横断面研究中，使用INFINITTPACS系统检查了成人的500次鼻旁窦计算机断层扫描。
结果：从IOF到眶下边缘（IOM）的距离，瞳孔中线(MPL),中矢线(MSL),犬隆起（CE），皮肤厚度（ST）分别为8.97±1.79、5.73±1.84、24.86±2.23、20.39±3.47和10.90±2.59mm，分别。孔的垂直和横向直径分别为3.03±0.65和3.71±0.76mm，分别。此外,63.5%的孔形状为椭圆形。AIOF的患病率为9%,它最常见的位置是IOF的上部。
结论：我们认为，在这项研究中，像国际移民组织这样的地标，MPL,MSL,CE和ST可以帮助临床医生定位IOF，提高ION麻醉成功率。此外，医师应考虑AIOF的发生,以减少眶下神经血管复合体损伤的机会.
方法：在这项回顾性横断面研究中，使用INFINITTPACS系统检查了成人的500次鼻旁窦计算机断层扫描。
结果：从IOF到眶下边缘（IOM）的距离，瞳孔中线(MPL),中矢线(MSL),犬隆起（CE），皮肤厚度（ST）分别为8.97±1.79、5.73±1.84、24.86±2.23、20.39±3.47和10.90±2.59mm，分别。孔的垂直和横向直径分别为3.03±0.65和3.71±0.76mm，分别。此外,63.5%的孔形状为椭圆形。AIOF的患病率为9%,它最常见的位置是IOF的上部。
结论：我们认为，在这项研究中，像国际移民组织这样的地标，MPL,MSL,CE和ST可以帮助临床医生定位IOF，提高ION麻醉成功率。此外，医师应考虑AIOF的发生,以减少眶下神经血管复合体损伤的机会.
