Kambic V, Zargi M, Radsel Z
J Laryngol Otol. 1984 Nov;98(11):1121-4. doi: 10.1017/s0022215100148121.
The authors have studied the anatomy of the external branch of the superior laryngeal nerve in its entirety on 40 fresh cadavers, and they have drawn the following conclusions: the nerve ramifies from the vagus immediately below the nodose ganglion or in the ganglion itself. The nerve splits into two branches approximately 1.5 cm below the ganglion nodosum. In four cases, both branches originated from the vagus itself. In one case, anastomosis of the external branch of the superior laryngeal nerve with the recurrent nerve was found. The external branch of the superior laryngeal nerve is not usually severed at supraglottic laryngectomy but the nerve is at risk during neck dissections, resection of Zenker's diverticula and thyroidectomy. An accurate knowledge of its course should reduce the incidence of injury to the branches of the superior laryngeal nerve during surgery.
作者在40具新鲜尸体上对喉上神经外支进行了完整的解剖研究，并得出以下结论：该神经在结节神经节下方紧邻处或在神经节本身内自迷走神经发出。神经在结节神经节下方约1.5厘米处分为两支。在4例中，两支均发自迷走神经本身。在1例中，发现喉上神经外支与喉返神经存在吻合。在声门上喉切除术时，喉上神经外支通常不会被切断，但在颈部清扫术、Zenker憩室切除术和甲状腺切除术期间该神经有受损风险。准确了解其走行应能降低手术中喉上神经分支损伤的发生率。
