Yalcin Bulent, Develi Sedat, Tubbs R Shane, Poyrazoglu Yavuz
Department of Anatomy, Gulhane Military Medical Academy, Ankara, Turkey.
Clin Anat. 2013 Oct;26(7):814-22. doi: 10.1002/ca.22198. Epub 2012 Dec 19.
The external layrngeal nerve (ELN) may be at risk during thyroidectomy. Because the relationship between the ELN and superior thyroid artery (STA) can be variable, we aimed to investigate their relationship in detail. In human cadavers, 81 ELN and STA and their branches were carefully dissected. The position of the nerve was classified as medial (Group I, on 76.5% sides), lateral (Group II, on 20.9% sides), or posterior (Group III, on 2.4% sides) to the origin of the STA. In Group Ia, the nerve did not cross the artery while it did cross the artery in Group Ib. In Group II, the nerve was located lateral to the origin of the artery and crossed it. In Group III, the nerve coursed downward posterior to the artery. In conclusion, the topography of the ELN showed much more variability in its relationship to the STA than is described in the literature. Such variations should be kept in mind during surgery of the anterior neck. It is our hope that such data will decrease surgical morbidity following surgery of the anterior neck.
甲状腺切除术期间，喉外神经（ELN）可能会受到损伤。由于ELN与甲状腺上动脉（STA）之间的关系可能存在变异，我们旨在详细研究它们之间的关系。在人体尸体上，仔细解剖了81条ELN、STA及其分支。根据神经相对于STA起始部的位置，将其分为内侧（I组，占76.5%）、外侧（II组，占20.9%）或后方（III组，占2.4%）。在Ia组中，神经不跨过动脉，而在Ib组中神经跨过动脉。在II组中，神经位于动脉起始部的外侧并跨过动脉。在III组中，神经在动脉后方下行。总之，ELN与STA关系的局部解剖变异比文献中描述的要多得多。在前颈部手术期间应牢记这些变异。我们希望这些数据将降低前颈部手术后的手术并发症发生率。
