Maity Rathin, Majumder Santanu, Roychowdhury Amit, Saha Subrata
Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711103, India.
Department of Biomedical Engineering, Florida International University, Miami, FL 33174; Affiliated Professor, Department of Restorative Dentistry, Affiliated Faculty, Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Washington, Seattle, WA 98195.
J Long Term Eff Med Implants. 2018;28(2):131-140. doi: 10.1615/JLongTermEffMedImplants.2018027269.
The goal of this finite element study is to reduce the stress shielding effect in tibial fracture fixation. Five different plates with modified geometry have been modeled. The fracture gap is assumed to be filled with callus, which is new born healing tissue. The effect of different plate modifications in four different healing stages has been compared to the nonmodified plate. It has been observed that all the modified models have higher callus stress than the nonmodified model, and the best modified plate has reduced the stress shielding effect by 117% for the first healing stage. It has also been observed that the effect of different plate modification is prominent during only the first and second healing stages.
本有限元研究的目标是减少胫骨骨折内固定中的应力遮挡效应。已对五种具有改良几何形状的不同钢板进行了建模。假定骨折间隙充满了骨痂，即新生的愈合组织。已将四种不同愈合阶段中不同钢板改良的效果与未改良的钢板进行了比较。据观察，所有改良模型的骨痂应力均高于未改良模型，且最佳改良钢板在第一个愈合阶段将应力遮挡效应降低了117%。还观察到，不同钢板改良的效果仅在第一和第二愈合阶段较为显著。
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