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Oblique thyroarytenoid muscle in humans: An independent muscle or an accessory belly?

机译:人类的斜甲状腺炎肌肉:独立的肌肉或配件腹部?

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Objectives/Hypothesis This study aimed to determine the prevalence and morphological variations of the oblique thyroarytenoid (TA) muscle in humans. Study Design Cadaveric anatomic dissections. Methods One hundred hemilarynges from 50 formalin‐embalmed cadavers were dissected to investigate the morphology of muscle fibers of the TA muscle. Results Thirty‐six (36%) hemilarynges were found to have a distinct oblique belly superficial to the TA muscle. In 28 cases, the belly had a relatively constant origin and an insertion that extended straight onto the TA muscle from the anterosuperior area of the internal surface of the thyroid lamina to the base of the muscular process of the arytenoid cartilage. Eight cases were located in a similar area but with some differences in the origin or insertion features. Conclusions We proposed that the oblique TA muscle has a high prevalence and probably acts to close and relax the vocal cords. It remains to be determined whether the oblique TA muscle is an independent muscle or an accessory belly of the main TA muscle. Level of Evidence NA. Laryngoscope , 128:1634–1638, 2018
机译:目的/假设本研究旨在确定人类倾斜甲状腺质(TA)肌肉的患病率和形态变化。研究设计尸体解剖剖析。方法解剖到50名福尔马林 - 拆卸尸体的一百个半岛,以研究TA肌肉肌纤维的形态。结果发现三十六(36%)的半岛肌肉与TA肌肉有明显倾斜的腹部浅表。在28例中,腹部具有相对恒定的起源和插入,直接从甲状腺内表面的亚腔内表面的Anteruior面积延伸到Ta肌肉上的TA肌肉到骨盆软骨的肌肉过程的基础上。八种案例位于类似的区域,但起源或插入特征存在一些差异。结论我们提出倾斜TA肌肉具有很高的流行,可能是靠近和放松声带的行为。它仍有待确定倾斜Ta肌肉是否是一个独立的肌肉或主要TA肌肉的辅助腹部。证据级别。喉镜,128:1634-1638,2018

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