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小指对掌肌腱弓的解剖学研究
引用本文:丁健,路来金.小指对掌肌腱弓的解剖学研究[J].解剖学报,2006,37(6):698-699.
作者姓名:丁健  路来金
作者单位:温州医学院附属第二医院手外科,温州 325000
摘    要:目的探讨Guyon管以远尺神经深支卡压征的解剖学基础。方法对20例新鲜成人上肢标本腕部进行显微解剖,肉眼及镜下观测腕部尺神经分支与周围组织的关系。结果尺神经穿出Guyon管后进入小指对掌肌浅、深两头和钩骨钩之间的间隙,该间隙可分为顶、底和桡侧壁,有一个入口和一个出口,暂称其为小指对掌肌间隙。小指对掌肌浅头腱性起点的近侧缘锐利,呈腱弓样,存在率100%,暂称其为小指对掌肌腱弓。结论小指对掌肌腱弓可以卡压尺神经深支,引起除小鱼际肌以外的尺神经支配的所有手内在肌的功能障碍。

关 键 词:腕部尺神经卡压征  小指对掌肌腱弓  小指对掌肌间隙  尺神经深支
收稿时间:12 27 2005 12:00AM
修稿时间:2005-12-272006-05-25

Anatomical Study on the Fascial Arch of the Opponens Digiti Minimi
DING Jian,LU Lai-jin.Anatomical Study on the Fascial Arch of the Opponens Digiti Minimi[J].Acta Anatomica Sinica,2006,37(6):698-699.
Authors:DING Jian  LU Lai-jin
Institution:Department of Hand Surgery, the Second Affiliated Hospital of Wenzhou Medical College, Wenzhou 325000,China
Abstract:Objective To explore the entrapment to the deep branch of the ulnar nerve at the wrist, to assist the surgeon in diagnosis and treatment of Guyon canal syndrome. Methods Twenty fresh upper limbs were dissected on loupe(×5), to record the relationship between the ulnar nerve and the hypothenar muscles, the course of the ulnar nerve at the wrist. Results The deep branchs of the ulnar nerve go through an intermuscular space after runing out of the Guyon canal. The intermuscular space consisits of the superficial and deep head of the opponens digiti minimi and the hook of the hamate, which has one entrance and one exit. We named the intermuscular space as the hiatus of opponens digiti minimi, and named the proximal edge of the superficial head of the opponens digiti minimi as the fascial arch of the opponens digiti minimi.Conclusion We found that the fascial arch of the opponens digiti minimi can compress the deep branch of the ulnar nerve causing motor deficit of the intrinsic muscles of hands.
Keywords:Guyon canal syndrome  The fascial arch of the opponens digiti minimi  The hiatus of the opponens digiti minimi  Deep branch of the ulnar nerve
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