Evaluation of a new sitting concept designed for prevention of pressure ulcer on the buttock using finite element analysis.
Evaluation of a new sitting concept designed for prevention of pressure ulcer on the buttock using finite element analysis.
复制标题
使用有限元分析评估旨在预防臀部压疮的新坐姿概念。
DOI：
10.1007/s11517-007-0261-3
复制
发表时间：
2007
影响因子：
3.2
通讯作者：
Makhsous,Mohsen
中科院分区：
文献类型：
--
作者：
Lim,Dohyung;Lin,Fang;Hendrix,RonaldW;Moran,Brian;Fasanati,Charles;Makhsous,Mohsen
过度的压缩负荷会导致轮椅使用者臀部压力相关性软组织损伤，即压迫性溃疡(PU)。为了解决这个问题，我们以前的研究引入了下坐式的概念，它部分地去除了坐骨支撑，以减少臀部以下的压力。然而，这种坐位概念的效果仅通过界面压力和组织灌注量测量来评估。本研究的目的是评估下体卧位在降低臀部深层组织内压力和应力方面的能力。这项评估是在三维有限元(FE)模型上进行的，该模型是在坐姿下建立和验证的，具有真实的材料特性和边界条件。本研究中的有限元分析证实，卸荷位所提供的压力释放对降低深部组织内的机械应力有深远的影响。结论是，在预防与坐姿有关的PU方面，脱负重体位可能是有益的。
Excessive compressive load induces pressure related soft tissue damage, i.e. pressure ulcer (PU), in buttock area in wheelchair users. In solving this problem, our previous study has introduced a concept ofOff-Loadingsitting, which partially removes the ischial support to reduce pressure under buttocks. However, the effect of this sitting concept has only been evaluated using the interface pressure and tissue perfusion measurements. The objective of this investigation was to evaluate theOff-Loadingposture for its ability to reduce internal pressure and stress in deep buttock tissues. This evaluation was performed on a 3D finite element (FE) model which was established and validated in a sitting posture and has realistic material properties and boundary conditions. FE analysis in this study confirmed that the pressure relief provided byOff-Loadingposture created profound effect in reducing the mechanical stress within deep tissues. It was concluded thatOff-Loadingposture may prove beneficial in preventing sitting related PU.