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面神经分叉的体表投影(见附图)。 A点:下颌角;B点:耳屏间切迹;C点:乳突尖。连接A、B两点,过C点向AB引垂线CD,线段CD与AB所形成的“T”字相交,则相当于面神经的“Y”形分叉处。面神经分叉的解剖面神经出茎乳孔入腮腺峡部,向前、下跨入下颌骨升枝表面的腮腺浅叶,通常面神经主干在近下颌骨升枝后缘、内层腮腺嚼肌筋膜的浅面分出颞面干和颈面干,两干支多呈“Y”字形分叉。临床测量“Y”
Facial nerve bifurcation of the body surface projection (see attached map). Point A: mandibular angle; Point B: incision between the tragus; point C: mastoid tip. Connect A and B, point C points to AB perpendicular to CD, segment CD and AB formed by the “T” word is the equivalent of the facial nerve “Y” -shaped bifurcation. Facial nerve bifurcation of the anatomical facial out of the styloid pump into the parietal isthmus, forward, under the ramus into the parotid surface of the mandibular shallow leaves, usually in the trunk of the mandibular ligation of the posterior margin of the parotid gland muscle fascia Divided into superficial temporal dry and cervical surface dry, mostly dry branch was “Y” -shaped bifurcation. Clinical Measurement “Y”