Department of Biomedical Engineering, Eindhoven University of Technology, P/O Box 513 5600 MB Eindhoven, The Netherlands.
J Tissue Viability. 2010 May;19(2):35-42. doi: 10.1016/j.jtv.2009.11.002. Epub 2009 Dec 16.
For pressure ulcer prevention an ambitious goal would be the establishment of a mechanical threshold for tissue damage. In the past, several researchers have sought to establish such a threshold often involving the loading time. However, they have not resulted in a unique reliable value that could be used in practice. This limitation is probably due to the focus on interface pressure. The objective of this paper is to clarify to an audience with no conventional background in mechanics, why interface pressure is not the appropriate parameter to define a damage threshold, whereas internal local deformations (strains) may prove more suitable. The paper reveals that it may be possible to identify a damage threshold for healthy skeletal muscle tissue based on local internal deformations.
对于压疮预防，一个雄心勃勃的目标是建立组织损伤的机械阈值。过去，有几位研究人员试图建立这样的阈值，通常涉及加载时间。然而，他们并没有得出一个独特的可靠值，无法在实践中使用。这种局限性可能是由于关注界面压力。本文的目的是向没有力学传统背景的听众澄清，为什么界面压力不是定义损伤阈值的合适参数，而内部局部变形（应变）可能更合适。本文揭示了，根据局部内部变形，有可能确定健康骨骼肌组织的损伤阈值。
