摘要
本研究详细解剖了20侧人三角肌的起止点,肌纤维走向和排列方式以及神经支配特征,将三角肌分成三个亚部,即前部、中部和后部。前、后亚部分别位于肩关节的前方和后外方,肌纤维呈平行排列并向下外集中,中部在外侧,纤维排列成多羽状,与前、后部可明确区分。三个亚部的神经分布是独立的,前部由腋神经前干发出的一支较粗大分支支配。前干的较细分支进入中部,后干主要由后干的肌支支配。进入各部的神经分支未见交叉。作者在同期研究的三角肌三个亚部肌纤维型分布有显著差异则是此肌亚部化的有力佐证。
The deltoid muscle from both sides of ten cadavers has been dissected carefully. According to its fiber architecture, different origins and insertions and nerve distribution, the deltoid muscle is able to be divided into three discrete compartments:the anterior, the middle and the posterior ones. The anterior and posterior compartments, in which their fibers are arranged in parallel, are situated at the front and back of the shoulder—joint respectively, and the middle compartment at the lateral aspect. The fibers of the middle compartment are arranged in multipenniform by which the three impartments can be distinguished readily. A larger branch from the anterior trunk of axillary nerve innervates the anterior compartment, the other smaller branches innervate the middle one. The posterior compartment is mainly innervated by branches of the posterior trund of axillary nerve. No nerve interchange occurs among three compartments. Our recent study shows that the proportion of two fiber types in three compartments of the deltoid is significantly different, which may be available in confirmation of the compartmentalization of the deltoid.
出处
《合肥医学院学报》
1990年第2期8-10,共3页
Journal of Zunyi Medical University
基金
国家自然科学基金
关键词
人三角肌
亚部化
大体解剖法
human deltoid muscle
com mentalization
gross—anatomy
