摘要
目的:观测面神经颞支在眼轮匝肌上部的分布特点。方法:9例福尔马林固定的成人尸头,18侧,在腮腺内解剖出面神经主干,追踪解剖颞支从腮腺至进入眼轮匝肌处。分别测量进入眼轮匝肌的颞神经最上分支和最下分支点到以外眦、睑裂中部、内眦为坐标的垂直和水平距离。结果:颞支的分支在进入眼轮匝肌外缘(以外眦为坐标点)的最上分支为(+2.58±0.32cm,+2.89±0.32cm),最下分支为(0 cm,+2.81±0.32 cm)。Y轴上颞神经最上分支和最下分支距X轴的距离分别为在以外眦、睑裂中部、内眦为坐标点的颞神经最上分支和最下分支距X轴的距离分别为(3.53±0.39)cm和(1.14±0.15)cm,(3.87±0.38)cm和(1.26±0.10)cm,(3.22±0.39)cm和(1.02±0.14)cm。面神经颞支的分支沿眼轮匝肌纤维水平向内走行并相互分支吻合。在Y LC轴、Y MP轴、Y MC轴上分别距X轴(1.14±0.15)cm、(1.26±0.10)cm、(1.02±0.14)cm三点弧形连线以下的区域,无面神经分支分布。结论:在无面神经分布的区域,切开眼轮匝肌纤维不会损伤面神经;在眼轮匝肌深面的筋膜脂肪层进行分离可以避免面神经分支的损伤。
Objective： To study the distribution of temporal branches of facial nerve at the upper part of orbicularis oculi muscle （OOM）. Methods： 18 cadaveric hemifaces were dissected. Temporal branches of facial nerve passing from the parotid gland to the orbicularis oculi muscle were observed. The highest and lowest branches coursing into the OOM were measured at three different planes through the lateral canthus, midpalpebral fissure, and medial canthus, respectively.Results： The highest level of those twigs that entered OOM on coordinate axis with lateral canthus as point was about （ ＋2.58±0.32cm,＋2.89±0.32cm）, and the lowest （0 cm, ＋2.81±0.32 cm）. The highest level of those twigs on the Y-axis with the point of lateral canthus, midpalpebral fissure, and medial canthus was about （3.53 ±0.39 ）cm,（ 3.87±0.38）cm, and （3.22±0.39） cm respectively, and the lowest （1.14±0.15）cm, （1.26±0.10）cm, and （1.02±0.14）cm respectively. Temporal branches of facial nerve coursed horizontally along the fibers of OOM and connected with each other. The region below the curve formed by lower three points had no innervation from branches of facial nerve. Conclusions： The injury for temporal branches of facial nerve is evitable during the separating procedure in the fat layer, as well facial nerve during the process of incising fibers of OOM in the region having no facial nerve innervation.
出处
《中国临床解剖学杂志》
CSCD
北大核心
2007年第1期14-16,共3页
Chinese Journal of Clinical Anatomy
关键词
面神经
眼轮匝肌
颞支
facial nerve
the orbicularis oculi muscle
temporal branch
