Abstract：
The axillary arch muscle, also called Langer\'s muscle, axillopectoralis, or pectodorsalis is a muscular variation of the latissimus dorsi muscle. During a standard anatomical dissection, the axillary arch muscle was found bilaterally. On both sides it originated from the latissimus dorsi as a muscle belly. Next it was passing into wide tendinous structure attached to the tendon of the pectoralis major muscle. Then, the narrow tendinous slip inserted into the coracoid process was found. The axillary arch muscle was innervated by the thoracodorsal nerve on both sides. Knowledge about morphological variations in this region is important since there is a direct relationship with neurovascular structures, e.g., ending branches of the brachial plexus, which may lead to paresthesia or muscle weakness.
摘要：
腋弓肌,也被称为兰格的肌肉，胸肩肌,或者是指背阔肌的肌肉变异。在标准解剖中，腋弓肌两侧。在两侧，它起源于背阔肌作为肌肉腹部。接下来，它进入附着在胸大肌肌腱上的宽肌腱结构。然后，发现了插入喙突的狭窄的腱状滑移。腋弓肌受两侧胸背神经支配。有关该区域形态变异的知识很重要，因为与神经血管结构有直接关系，例如，臂丛神经的末端分支，这可能导致感觉异常或肌肉无力。
