![肱二头肌腱解剖特点与生物力学](https://img-a.haoyishu.com/article/content/7906/45ffde0a-5f02-4db4-be31-3cb7ffbe56f3.jpg)
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长头关节盂插入 -
延伸至肱骨头上极 -
旋转间隔 -
反射到上二头肌沟 -
二头肌沟 -
上肌腱交界处 -
下肌腱交界处 -
远端肌腱 -
远端附着点
![肱二头肌腱解剖特点与生物力学](https://img-a.haoyishu.com/article/content/7906/b713ef2b-c2e9-4c20-92b4-54ddcc4d9045.jpg)
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随着肘部伸展,二头肌仅产生肘部屈曲 -
任何程度的肘部屈曲,二头肌都会产生旋后,而肱三头肌 抵抗肘部屈曲 -
如果三头肌不抵消肘部弯曲,二头肌将在肩部和肘部产生飞行 -
如果三角肌无力或瘫痪,二头肌可以帮助启动肩部外展
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长头:手臂外展 -
短头:手臂内收和屈曲
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旋前臂旋后 -
旋前臂屈曲
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