断掌的神经断层解剖

The nerve transected anatomy of a harmed severely palm

目的 目的为临床断掌再植提供断层解剖学资料。方法 新鲜成人男性手标本 30例,由腕远侧纹中点至中指掌指皱纹中点切割成 7个断面,测量手掌部各神经的断面面积,分析其走行、分支、分布规律。结果 第一、二断层内正中神经横径(6. 7±1. 0)mm,面积(13. 8±0. 8)mm2;中神经返支发自第二断层内,于三、四断层间发出拇指掌侧固有神经,五、六断层间分为指掌侧固有神经。第一断层内尺神经发出尺神经深支,伴尺动脉深支,行向桡侧至第二断层。尺神经 80%于第一断层内发出小指尺掌侧固有神经与第四指掌侧总神经,第四指掌侧总神经在三、四断层处分出小指掌桡侧固有神经,无名指掌尺侧固有神经。结论 一、二断层可视为神经分布的混合区,以远各断层主要为神经分布的感觉区。各断层间横径与横截面积可为神经移植提供解剖学依据。把断掌分为掌近部、掌中部、掌远部三部的分型方法,概括了手掌部神经分布特点,较为理想。

Objective To provide the transected anatomical data for the clinical retransplation of a palm harmed severely. Methods The 30 newly-unfixed adult cadaver hands were cut into 7 identical parts from the midpoint of the distal wrist crease to the midpoint of the proximal transverse crease of the third finger. In every section, the area, traveling, branches and distribution of nerves were observed, measured and analyzed.Results The transverse diameter (TD) of the median nerve was (6.7±1.0) mm amd the area ...