Hwang Kun, Jin Sheng, Hwang Se Ho, Chung In Hyuk
Department of Plastic Surgery and Center for Advanced Medical Education by BK21 Project, Inha University College of Medicine, Incheon, Korea.
J Craniofac Surg. 2006 Nov;17(6):1116-7. doi: 10.1097/01.scs.0000235107.70118.06.
The aim of this study is to elucidate the innervation of upper orbicularis oris muscle. The upper lips of 17 hemifaces of Korean adult cadavers were dissected. The number of nerve branches crossing and entering the outer margin of pars peripheralis and pars marginalis were counted, respectively. The location of ramifying point of the buccal branch was measured. The nerve branches crossing the outer margin of pars peripheralis were about 4 (3.71 +/- 1.05) on each side of the face and branches crossing the outer margin of pars marginalis was 4.65 +/- 1.46. About four (4.06 +/- 0.83) branches entering the pars marginalis were found. Most ramifying points (14/17, 82%) located within a circle of 5 mm in radius diameter and the center was at 12 mm lateral and 26 mm superior to the mouth corner. An anatomical knowledge might be contributive to understand a wrinkle depletion of the upper lip and function of the orbicularis oris muscle.
本研究的目的是阐明口轮匝肌上部的神经支配情况。对17例韩国成年尸体半侧面部的上唇进行了解剖。分别计数穿过并进入周边部和边缘部外缘的神经分支数量。测量颊支的分支点位置。面部每侧穿过周边部外缘的神经分支约为4支（3.71±1.05），穿过边缘部外缘的分支为4.65±1.46支。发现约有4支（4.06±0.83）分支进入边缘部。大多数分支点（14/17，82%）位于半径为5mm的圆内，圆心位于口角外侧12mm、上方26mm处。解剖学知识可能有助于理解上唇皱纹的消除及口轮匝肌的功能。
