尺神经的显微外科解剖学研究

A STUDY OF THE MICROSURGICAL ANATOMY OF THE,ULNAR NERVE

研究了23例成人的尺神经内部结构。其中20例用醋酸溶液滴浸,在手术显微镜下解剖分离,3例作断面对照观察。根据显微外科技术的需要,对尺神经干内主要束组作了局部解剖学定位研究。1.观察测量了尺神经干的位置、形态、粗细、束数,绘制了尺神经干断面的局部定位图。2.在前臂的下端和掌部,尺神经深股居后象限,浅股居前象限。尺神经手背皮枝束组由前臂中下到中上部,居神经干的内侧。尺神经前臂肌枝,在肘关节附近居神经干的后外端。3.讨论了显微外科神经束膜缝合术与尺神经主要束组的关系。分析了尺神经易受压损伤的局部解剖结构。

The internal structures of the ulnar nerves of 23 adult cadavers were studied,of which 20 cases were soaked with 10%acetic acid solution and their ulnar nerves were dissected under operative microscope,the remaining three were cross-sectioned for control.Based on the requirements of microsurgical technique,the patterns of the main bundle groups of the ulnar nerves were made.1.The location,morphology,and the number of bundles of the ulnar nerves were observed and their sizes were measured.The topographies of the cross-sectioned ulnar nerves were noted.2.At the lower part of the forearm and palmar region,the profund bundles of the ulnar nerves were situated at posterior quadrant while the superficial ones at the anterior.In the lower and the upper middle portions of the forearm,the bundle group of dorsal cutaneous branches of the ulnar nerve was situated in the medial portion of the nerve trunk;at the region of the elbow joint,the muscular branches of the ulnar nerve were located in the posterio-lateral portion of the nerve trunk3.For the microsurgical technique,the funicular suture of the nerve in relation to its main bundle groups was disscused.The anatomical factors where the nerves may sustain compression and damage were analyzed.