Goto Akira, Kunihiro Oka, Murase Tsuyoshi, Moritomo Hisao
Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan.
Hand Surg. 2010;15(3):165-8. doi: 10.1142/S021881041000493X.
There are significant variations in the anatomy of the dorsal cutaneous branch of the ulnar nerve. The dorsal cutaneous branch is at a risk of injury during a therapy for the ulnar side of the wrist. The purpose of this study is to measure the variations of the dorsal cutaneous branch. We studied 30 embalmed cadaver specimens. In its course, two division patterns of the dorsal cutaneous branch were identified, namely proximal and distal types. The proximal type went around the ulna proximal to the ulnar styloid process, and directed toward the ulnodorsal aspect. The distal type went around to the ulnodorsal aspect, distal to the styloid process. The proximal type was found in 21 of 30 cadavers, and the distal type was found in nine of 30 cadavers.
尺神经手背支的解剖结构存在显著差异。在手腕尺侧进行治疗时，手背支有受伤风险。本研究的目的是测量手背支的变异情况。我们研究了30具防腐尸体标本。在手背支的走行过程中，确定了两种分支模式，即近端型和远端型。近端型在尺骨茎突近端绕过尺骨，指向尺背侧。远端型在茎突远端绕过并指向尺背侧。30具尸体中有21具为近端型，9具为远端型。
