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研究面神经下颌缘支的重要毗邻关系。方法 逐层解剖 6 0侧完整的头颈部标本。观察下颌缘支的支数及分型、与颌外动脉的位置关系、神经走向、与颊支和颏神经吻合情况进行了描述和分析。结果 面神经下颌缘支以 1～ 2支居多。全程分型 ,单干型占 48% ;二干型占 15 % ;合干型占 37%。面神经下颌缘支位于颌外动脉浅面占 86 % ;位于在深面者占 6 % ;下颌缘支环抱或夹持者占 8%。面神经下颌缘支位下颌骨下缘占 44 % ,平下颌骨下缘占 5 1% ;远离下颌骨下缘点 5 %。。结论 面神经下颌缘支的毗邻和行程关系较为复杂 ,了解其与周围的这些重要结构关系 ,可以减少因神经损伤造成下唇及口角功能障碍的发生。
To study the important adjacent relationship of facial mandibular limbal branch. Methods Sixty complete anatomic head and neck specimens were dissected layer by layer. The number and type of marginal mandibular branch were observed, the relationship with the external maxillary artery, the direction of the nerve, the anastomosis with the buccal branch and the chin nerve were observed and analyzed. Results The facial mandibular marginal branch of 1 to 2 mostly. The whole type, single type accounted for 48%; two dry accounted for 15%; co-dry accounted for 37%. Facial mandibular margins are located in the superficial external carotid artery accounted for 86%; located in the deep 6%; mandibular marginal cuddle or gripper accounted for 8%. The mandibular margin of the facial nerve accounted for 44% of the lower edge of the mandible, the lower edge of the mandibular mandibular margin accounted for 51% and 5% away from the lower edge of the mandible. . Conclusions The relationship between the adjacent border of the mandibular branch of facial nerve and the itinerary is rather complicated. Understanding the relationship between these adjacent structures and their surrounding structures can reduce the incidence of lower lip and mouth dysfunction due to nerve injury.