Mechanics of scars
Mechanics of scars
复制标题
DOI：
10.1016/j.jbiomech.2004.07.026
复制
发表时间：
2005-08-01
影响因子：
2.4
通讯作者：
Cerda, E
中科院分区：
文献类型：
--
作者：
Cerda, E
正如大家所观察到的，当伤口愈合时，它会收缩，增厚，并在邻近的皮肤上起皱纹，形成疤痕。疤痕的形态取决于伤口的类型；紧急气管切开术和精心计划的面部拉皮术会留下完全不同的疤痕。侵入性手术的外科挑战，如去除皮肤病变，皮肤移植或移植，以及疤痕去除，由于身体不同部位的复杂几何形状和应力状态而变得复杂。我们表明，在相对一般的情况下，疤痕局部的性质是由皮肤的背景张力决定的，背景张力可以阻止疤痕周围皱纹的形成。我们模拟这一过程的物理实验表明，由缺陷变形的区域具有类似于1/根tau的特征长度尺度r(*)，其中tau是皮肤的自然张力。(c) 2004 Elsevier Ltd.版权所有。
When a wound heals, as everyone has observed, it contracts, thickens and wrinkles the neighbouring skin, forming a scar. The morphology of the scar depends on the type of wound; an urgent tracheotomy leads to a very different scar than a carefully planned face lift. The surgical challenges of intrusive procedures such as removal of skin lesions, skin transplantation or grafting, and scar removal are complicated by the complex geometry and stress states in different parts of the body. We show that, for relatively general conditions, the nature of the localisation of the scar is determined by the background tension of the skin which can arrest the formation of wrinkles around a scar. Our physical experiments to simulate this procedure indicate that the region deformed by the defect has a characteristic length scale r(*) similar to 1/root tau, where tau is the natural tension of the skin. (c) 2004 Elsevier Ltd. All rights reserved.