Iwanaga Joe, Kikuta Shogo, Kusukawa Jingo, Tomaszewski Krzysztof A, Walocha Jerzy A, Tubbs R Shane
Associate Professor, Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA; Associate Professor, Dental and Oral Medical Center and Division of Gross and Clinical Anatomy, Department of Anatomy, Kurume University School of Medicine, Kurume, Japan.
Assistant Professor, Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Japan.
J Oral Maxillofac Surg. 2020 May;78(5):717-723. doi: 10.1016/j.joms.2020.01.004. Epub 2020 Jan 15.
Neurosensory disturbance of the infraorbital nerve is one of the many complications of the Le Fort osteotomy. An accessory infraorbital foramen (AIOF) can be one reason for such complications. Therefore, the purpose of the present study was to elucidate the distribution of the accessory infraorbital nerve (AION) arising from the AIOF.
We dissected 60 sides from 30 fresh-frozen cadaveric heads.
An AIOF was found in 36.7% of the heads examined. When an AIOF was detected, the nerve was traced distally and proximally. The mean horizontal and vertical diameters of the AIOF were 1.64 ± 0.88 and 1.75 ± 0.87 mm, respectively. The largest AIOF was 3.42 × 3.79 mm. All AIOFs were located medial to the infraorbital foramen. Most of the AIONs (87.5%) had branches to the external nose.
The AION should always be remembered by surgeons to allow for improved outcomes and better understanding of the complications such as those occurring after Le Fort osteotomy.
眶下神经感觉障碍是勒福截骨术众多并发症之一。眶下副孔（AIOF）可能是此类并发症的一个原因。因此，本研究的目的是阐明由眶下副孔（AIOF）发出的眶下副神经（AION）的分布情况。
我们对30个新鲜冷冻尸体头部的60侧进行了解剖。
在所检查的头部中，36.7%发现有眶下副孔。当检测到眶下副孔时，对神经进行向远侧和近侧追踪。眶下副孔的平均水平直径和垂直直径分别为1.64±0.88毫米和1.75±0.87毫米。最大的眶下副孔为3.4×3.79毫米。所有眶下副孔均位于眶下孔内侧。大多数眶下副神经（87.5%）有分支至外鼻。
外科医生应始终牢记眶下副神经，以改善手术效果，并更好地理解诸如勒福截骨术后出现的并发症。
