前臂肘窝处皮神经内外侧支横断切面的比较显微解剖学研究：尸体研究。

A comparative microanatomical study on cross sections of medial and lateral cutaneous nerves of forearm at the antecubital fossa: a cadaveric study.

机构信息

Department of Anatomy, Kasturba Medical College, Madhav nagar, Manipal 576104, Karnataka, India.

出版信息

Ann Anat. 2010 Apr 20;192(2):107-15. doi: 10.1016/j.aanat.2009.12.004. Epub 2010 Jan 25.

DOI:10.1016/j.aanat.2009.12.004

PMID:20138488

Abstract

BACKGROUND

The anterior branch of the medial antebrachial cutaneous nerve of the forearm (AMACN) and the lateral antebrachial cutaneous nerve of the forearm (LACN) are used as potential donor grafts for repairing sensory nerves. A higher percentage of connective tissue plays an important role in predicting prognosis after nerve repair. The aim is to perform a comparative study on cross-sectional microanatomy and age related changes in non-fascicular components of the AMACN and LACN.

METHODS

Thirty six fresh human (from both sides of 14 male and 4 female) cadaveric AMACN and LACN were collected at antecubital fossae and studied at different magnifications for morphometric analysis (total cross-sectional area (Asc), fascicular area (Af) and non-fascicular area (Anonf)), after histological (Masson's trichrome stain) processing.

RESULTS

AMACN and LACN belong to polyfascicular type and showed differences in amount of connective and adipose tissues in non-fascicular areas. In the AMACN, there was less adipose tissue (19.38% in Asc and 25.57% in Anonf) with more collagen fibers (57.28% in Asc and 75.57% in Anonf) and in the LACN, there was more adipose tissue (47.51% in Asc and 58.19% in Anonf) with fewer collagen fibers (34.10% in Asc and 41.76% in Anonf) in interfascicular domains.

CONCLUSIONS

The amount of adipose tissue in LACN non-fascicular area was found to be high at all ages. The presence of less adipose tissue and collagen fibers in the non-fascicular area of the AMACN (below 60 years) could be used for successful nerve grafting when compared to LACN.

摘要

背景

前臂内侧皮神经前支（AMACN）和前臂外侧皮神经（LACN）被用作修复感觉神经的潜在供体移植物。结缔组织的比例较高对神经修复后的预后有重要影响。本研究旨在对手前臂 AMACN 和 LACN 非束状成分的横截面微观解剖和年龄相关性变化进行对比研究。

方法

在肘窝处收集 36 例新鲜人体（14 名男性和 4 名女性，两侧各 18 例）AMACN 和 LACN，进行不同放大倍数的形态计量分析（总横截面积（Asc）、束状面积（Af）和非束状面积（Anonf）），并进行组织学（Masson 三色染色）处理。

结果

AMACN 和 LACN 属于多束型，非束状区的结缔组织和脂肪组织含量不同。AMACN 中的脂肪组织较少（Asc 中为 19.38%，Anonf 中为 25.57%），胶原纤维较多（Asc 中为 57.28%，Anonf 中为 75.57%），而 LACN 中的脂肪组织较多（Asc 中为 47.51%，Anonf 中为 58.19%），胶原纤维较少（Asc 中为 34.10%，Anonf 中为 41.76%）。