Amin M S A, Baig U, Zaidi S Y, Brennan P A, Parry D
School of Medicine, King's College London, Hodgkin Building, Guy's Campus, SE1 1UL.
Consultant Maxillofacial Surgeon, Honorary Professor of Surgery, Queen Alexandra Hospital, Portsmouth, PO6 3LY, UK.
Br J Oral Maxillofac Surg. 2020 May;58(4):472-474. doi: 10.1016/j.bjoms.2020.01.021. Epub 2020 Feb 1.
We report on an additional innervation to the sternothyroid that, to our knowledge, has not been previously described. During a cadaveric neck dissection, we found an aberrant nerve to the sternothyroid in addition to the normal innervation. The classical innervation to the sternothyroid is through the ansa cervicalis (C1-C3), and the sternothyroid muscle is important for depression of the thyroid cartilage that is involved with swallowing and speech. The cervical plexus is difficult and time consuming to elucidate in fixed cadavers, which limits knowledge of variations from this source. Branches of the plexus are delicate and can be damaged during operations on the neck. Awareness of variations in innervation during operation reduces the chance of damage to nerves and prevents functional changes postoperatively.
据我们所知，我们报告了一种之前未被描述过的胸骨甲状肌额外神经支配情况。在一次尸体颈部解剖过程中，我们发现除了正常的神经支配外，还有一条至胸骨甲状肌的迷走神经。胸骨甲状肌的经典神经支配是通过颈袢（C1 - C3），并且胸骨甲状肌对于甲状软骨下压很重要，这与吞咽和言语有关。在固定的尸体中阐明颈丛既困难又耗时，这限制了对源于该部位变异情况的了解。颈丛的分支很纤细，在颈部手术过程中可能会受损。术中了解神经支配的变异情况可减少神经损伤的几率，并防止术后出现功能改变。
