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用手术显微镜对50例成人的颈阔肌作了观察和测量。将每侧颈部分为9个区,颈阔肌位于前6区。肌的内侧界约相当于颏舌骨连线中点稍下到锁骨胸骨端稍外侧处的连线,左右侧肌夹有40°角;外侧界为下颌角稍后到锁骨肩峰端内侧3cm处的连线;下界在第一肋间隙平面,有的肌下份出现一些较宽的裂隙;上界在下颌骨体,并与某些表情肌相连续。肌的面积约150cm~2,锁骨上部约占120cm~2。后份肌纤维略呈S形弯曲。肌与深层结构联系较松。本文还对面神经和颈丛与颈阔肌有关的分支,进行了观察。对和颈面部临床应用等有关的问题进行了讨论。
Fifty adult adults of the platysma were observed and measured with a surgical microscope. Each side of the neck is divided into 9 zones, platysma muscle located in the first 6 districts. The medial part of the muscle is approximately equal to the midpoint of the genioglossus line slightly below the connection to the lateral side of the sternoclavicular crest, the left and right muscles have a 40 ° angle; the lateral boundary is the mandibular angle and then to the medial side of the clavicle shoulder terminal 3cm Department of the lower boundary in the first intercostal space plane, and some under the muscle some wide cracks appear; the upper bound in the mandibular body, and with certain facial muscles continuous. Muscle area of about 150cm ~ 2, supraclavicular about 120cm ~ 2. Rear muscle fibers slightly curved S-shaped. Muscles and deep structure of loose relations. This article also observed facial nerve and cervical plexus and platysma-related branches. The issues related to the clinical application of the face and neck are discussed.