Hwang Kun, Han Jin Yi, Battuvshin Damdinsuren, Kim Dae Joong, Chung In Hyuk
Department of Plastic Surgery, Inha University Hospital, Incheon, Korea.
J Craniofac Surg. 2004 Jan;15(1):88-91. doi: 10.1097/00001665-200401000-00025.
The maxillary nerve, second division of the trigeminal nerve, is entirely sensory. It has been reported that drooling may occur later in the event of fracture of the zygoma in which hypesthesia prevails. The aim of the study is to elucidate additional detailed anatomy of the infraorbital plexus, consisting of the superior labial branch of the infraorbital nerve and facial nerve in the cheek. The authors dissected infraorbital nerves and facial nerves in 16 cadavers. Most terminals of the zygomatic branch of the facial nerve emerged from under the levator labii superiors and zygomatic muscle and infraorbital nerve. A hazardous zone of infraorbital plexus is found in a circle 36 mm in diameter. Its center is located 22 mm below the inferior orbital foramen. This hazardous zone of infraorbital plexus should be kept in mind when performing any procedures related to zygoma, maxilla, or deep cheek injuries.
上颌神经是三叉神经的第二分支，完全为感觉神经。据报道，颧骨骨折后期若出现感觉减退，可能会发生流口水现象。本研究的目的是阐明眶下神经丛的更多详细解剖结构，该神经丛由眶下神经的上唇支和面颊部的面神经组成。作者对16具尸体的眶下神经和面神经进行了解剖。面神经颧支的大多数终末支从提上唇肌、颧肌和眶下神经下方穿出。在直径36毫米的圆形区域内发现了眶下神经丛的危险区。其中心位于眶下孔下方22毫米处。在进行任何与颧骨、上颌骨或面颊深部损伤相关的手术时，都应牢记眶下神经丛的这个危险区。
