皮肤正交各向异性及扩张器力学特性对皮肤扩张影响.docVIP

皮肤正交各向异性及扩张器力学特性对皮肤扩张影响 　　[摘要]目的：研究皮肤正交各向异性及扩张器力学特性对皮肤扩张的影响，为临床扩张器置入及扩张皮瓣的设计提供参考。方法：以朗格氏线（Langers lines）为X轴，Y轴垂直于朗格氏线，测量计算注水前后两轴单位皮肤扩张量，测量分析扩张器囊壁的张力特征。结果：Y轴单位皮肤扩张量注水前后明显大于X轴；扩张器其囊壁在各个方向上单位延展量与其形状有关。结论：皮肤扩张时，在各个方向上扩张效率并不一致，沿朗格氏线方向扩张效率最低，而沿垂直于朗格氏线方向扩张效率最高，扩张期张力特性对皮肤扩张存在较大影响。 　　[关键词]正交各向异性；皮肤扩张；扩张器 　　[中图分类号]R622 [文献标识码]A [文章编号]1008-6455（2012）03-0369-03 　　 　　The skins orthotropy and the tension character of the tissue expander affect the expanding of the skin 　　FAN Peng-ju1,LONG Jian-hong1,GAO Guang-jun2 　　(1.Department of Plastic Aesthetic Surgery,Xiangya Hospital of Central South University,Changsha 410008,Hunan,China;2.School of Traffic And Transportation Engineering of Central South University) 　　 　　Abstract: Objective Investigate how the skins orthotropy and the tension character of the tissue expander affect the expanding of the skin, and to suggest how to embed the tissue expander and to design expanding flap. Methods The coordinate was constructed with Langers line as the X-axis and the Y-axis perpendicular to the Langers line. The quantity of the expanded skin was measured before and after injecting saline. The stress character of the wall of the tissue expander was also measured and analyzed. Results The expanded skin per unit in the Y-axis orientation is more than in the X-axis. The per unit extending quantity of the wall of the tissue expander is related to the shape of the tissue expander. Conclusion There is different skin expanding efficiency in the different orientations when the skin is expanded because of the skins orthotropy. Generally, the minimum skin expanding efficiency lies in the langers line, while the maximum in the line perpendicular to the former. The tension character of the tissue expander has large effect on the skin expanding. 　　Key words:orthotropy;expanding of skin;tissue expander 　　 　　 皮肤软组织???张技术应用已有30余年的历史，它的出现及发展对推动现代整形外科发展具有重要推动作用，国内外学者对其进行了大量的临床及实验研究。皮肤具有张力正交各向异性，这一特性及扩张器自身力学特性对皮肤扩张影响如何，文献未见类似报告。 　　 　　1 资料 　　 以我科