摘要
采用手术显微镜下解剖分离的方法,研究了22例成人肌皮神经的内部结构,及其纤维束组在臂丛内不同断面的定位。结果表明,在肌皮神经的远侧端断面,肌支束与皮支束分界明确,肌支束位于前外象限:在其近侧端断面,以混合束为主,肌支束或以肌支束为主的混合束位于前外象限,在锁骨下1cm、锁骨上1cm、1.5cm处断面,肌皮神经束组位于前上外象限;在上干断面,位于前份。肌皮神经纤维来自C_5、 C_6和C_7,神经根,其所占比例分别为31.6％,64.6％和3.8％。
The arrangement of fascicles of musculocutaneous nerve at different levels in brachial plexus were studied in 22 adult cadavers. The nerve fascicles were dissociated and traced under operative microscope. At the distal end of the musculocutaneous nerve, the muscular and cutaneous fascicles are separated.The muscular fascicles are situated at the latero-anterior quadrant of the cross-section of the nerve.The mixed fascicle are become predominated proximally. The muscular and the muscular predominated mixed fascicles are still situated at latero-anterior quadrant. At the level 1 cm below the clevicle, 1cm and 1.5 cm above the clevicle,the fascicles of the nerve are situated at the lateral superio-anterior quadrant of the crosssection of relative parts of brachial plexus. The fascicles of the nerve are situated at the anterior quadrant of the crosssection of superior trunks. The fibers of musculocutaneous nerve are originate from C5, C6 and C7, being 31.6,％, 64.6％ and 3.8％,respectively.
出处
《解剖学报》
CAS
CSCD
北大核心
1992年第1期7-10,共4页
Acta Anatomica Sinica
关键词
肌皮神经
臂丛
显微外科
解剖
Musculocutaneous nerve
Brachial plexus
Microsurgical anatomy
