掌浅弓合并掌深弓变异一例

One Case of Variation of Superficial Volar Arch Combined with Deep Volar Arch

摘要: 手是人体功能的执行的主要承担者，其复杂性和多样性是其他部位难以比拟的，所以了解手掌正常解剖结构及其存在的变异解剖结构，有着重要的临床意义。笔者在解剖教学标本的过程中，发现手掌的双侧掌浅弓和掌深弓同时存在变异，此变异较为少见，主要变异为：1) 尺动脉终支和桡动脉掌浅支未吻合，分别形成两个浅层动脉弓；2) 右手拇指桡侧由拇主要动脉供应，拇指尺侧和示指桡侧由桡侧浅层动脉弓发出分支供应。左手拇指桡侧由拇主要动脉和指掌侧固有动脉供应，拇指尺侧和示指桡侧由桡侧浅层动脉弓发出分支供应；3) 尺动脉缺乏掌深支，掌深弓仅由桡动脉终支构成；4) 掌深弓发出四条掌心动脉。希望本文有助于手部解剖资料的积累，对临床诊疗提供帮助。

Abstract: The hand is the main bearer of human functions, and its complexity and diversity are unmatched by other parts. Therefore, it is of great clinical significance to understand the normal anatomical structure of the palm and its variation. In the process of anatomy teaching specimens, the author found that the bilateral shallow and deep volar arch of the palm had variations at the same time, which was relatively rare, and the main variations were as follows: 1) The distal branch of ulnar artery and superficial palmar branch of radial artery were not anastomosed, forming two shallow arterial arches respectively. 2) The radial side of the right thumb is supplied by the main thumb artery, and the ulnar side of the thumb and the radial indicating finger are supplied by branches from the superficial arterial arch of the radial side. The left thumb is supplied by the main thumb artery and the palmar digital artery, and the ulnar thumb and the radial indicator finger are supplied by the shallow radial arterial arch. 3) The ulnar artery lacks the deep palmar branch, and the deep palmar arch is only composed of the terminal branch of the radial artery. 4) The deep arch of the palm emits four palmar arteries. It is hoped that this paper will contribute to the accumulation of hand anatomy data and provide help for clinical diagnosis and treatment.