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首页> 外文期刊>Journal of Clinical Medicine and Research >Anatomical study of the third head of biceps brachii muscle and its innervation by median nerve in human dissection
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Anatomical study of the third head of biceps brachii muscle and its innervation by median nerve in human dissection

机译：肱二头肌肱三头肌解剖及其正中神经支配的解剖研究

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Several studies have described the biceps brachii muscle as one of the muscles in the upper limb with most frequent anatomical variations. They also reported the presence of this anomaly in varying frequency in different populations. The aim of this study was to assess the anatomical description of the third head of biceps brachii muscle and its abnormal innervation in human autopsies which would be of value for the surgical approach in the arm. Forty arms (20 cadavers) were dissected. The upper arm and axilla region of all cadavers were dissected carefully, then the biceps brachii muscle and surrounding structures were clearly demonstrated to show any muscle variations and abnormalities of its nerve supply, then different photographs were collected. The present study demonstrated the third head of the biceps brachii muscle in 6 out of 40 specimens (15%). The third head of biceps brachii was dominant in the right arm (4 specimens) in contrast to two specimens in the left arms and the muscle was innervated by the median nerve instead of normal innervations by the musculocutaneous nerve. In conclusion, the present study of anatomical variations of the biceps brachii muscle in the arm may contribute to a better developmental understanding and surgical approach.
机译：几项研究将肱二头肌描述为上肢中最常见的解剖变异之一。他们还报告了该异常在不同人群中的发生频率不同。这项研究的目的是评估肱二头肌第三头的解剖学描述及其在人体解剖学中的异常神经支配，这对于手臂的外科手术方法具有重要意义。解剖了四十臂（二十具尸体）。仔细解剖所有尸体的上臂和腋窝区域，然后清楚地显示肱二头肌和周围结构显示出任何肌肉变异和神经供应异常，然后收集了不同的照片。本研究表明，在40个样本中有6个样本（15％）中肱二头肌的第三头。肱二头肌的第三个头在右臂占优势（4个标本），而在左臂则是两个标本，肌肉由正中神经支配而不是由肌皮神经支配。总之，本研究臂中肱二头肌的解剖学变化可能有助于更好的发育理解和手术方法。

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