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以往多认为面神经下颌支前趋面动脉区的全部分支都在下颌下缘的上方。本文介绍用防腐或新鲜的尸体标本以及在一系列病人腮腺和颌下区手术时,在放大镜和手术显微镜下作解剖,同时用一个具有不同强度的神经刺激器追踪观察下颌支远端的分布及其支配的肌肉。结果表明:面神经分支至少有三支是在下颌骨下缘下方,分布到唇及颊部的肌肉。供应颏肌和降下唇肌的分支在下颌下,远近不一,颏肌支在最下面。供应降口角肌的分支一般走行到面动脉前方时位于下颌下缘的略上方,少数也可在其下方进入肌中。此分支通常较其他分支粗大,故以往很可能将此支认
In the past that the facial nerve mandibular artery in front of all branches of the artery in the lower edge of the mandible above. This article describes the use of preservative or fresh cadaver specimens and in a series of patients parotid and submandibular surgery, under a magnifying glass and under the operating microscope for anatomy, with a different intensity of the stimulator to track the distribution of distal mandibular branch and Its dominant muscle. The results showed that there are at least three branches of facial nerve below the lower edge of the mandible and distribute to the muscles of the lips and cheeks. The supply of the cheek muscles and lower lip muscle branches in the submandibular, near and far, chin muscle branch in the bottom. Supply crouch muscle branch generally walk to the front of the facial artery in the lower edge of the mandible slightly above, a few can also enter the muscle below. This branch is usually larger than the other branches, so in the past it is likely to recognize this