Department of Otolaryngology and Head and Neck Surgery.
Department of Anatomy, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
J Craniofac Surg. 2021;32(5):1832-1835. doi: 10.1097/SCS.0000000000007222.
Despite good surgical knowledge of the anatomy of parotid gland and meticulous surgical technique, the incidence of facial palsy in parotid surgeries is up to 26.7% transient and 1.7% complete facial palsy(1). The risk of facial palsy increases further in malignant and revision cases.
Superficial parotidectomy was done in 14 cadaveric hemi faces in 10 cadavers. Posterior auricular artery and its stylomastoid branch was dissected and facial nerve trunk was identified in all cases. The relationship of posterior auricular artery along with its stylomastoid branch with the facial nerve trunk was studied and recorded.
Posterior auricular artery was found running inferior to the facial nerve trunk in 12 cadaveric dissection while the posterior auricular artery was found crossing below the main trunk of facial in 2 cadaver dissection. The average distance between PAA and facial nerve trunk was 7 mm (2-14 mm) Stylomastoid artery was found arising from Posterior auricular artery in 12 of 14 and it was found running medial to the facial nerve trunk in all the 8 cadavers.
Post auricular artery can be used as another landmark for identification of the main trunk of facial nerve in parotid surgeries.
尽管对腮腺解剖结构有很好的手术认识和精细的手术技术，但在腮腺手术中，面神经麻痹的发生率高达 26.7%为暂时性，1.7%为完全性面神经麻痹（1）。恶性和修复病例中面神经麻痹的风险进一步增加。
在 10 具尸体的 14 具半面尸体中进行了腮腺浅切除术。在所有病例中，均解剖了耳后动脉及其茎乳突支，并识别面神经干。研究并记录了耳后动脉及其茎乳突支与面神经干的关系。
在 12 例尸体解剖中，发现耳后动脉位于面神经干下方，而在 2 例尸体解剖中，发现耳后动脉穿过面神经干主干下方。PAA 与面神经干之间的平均距离为 7 毫米（2-14 毫米）。在 14 例中有 12 例发现茎乳突动脉发自耳后动脉，在所有 8 例尸体中，它都位于面神经干的内侧。
耳后动脉可作为腮腺手术中识别面神经干主干的另一个标志。
