Comparison between mechanical stress and bone mineral density in the femur after total hip arthroplasty by using subject-specific finite element analyses.
作者： Hiroyuki Ike , Yutaka Inaba , Naomi Kobayashi , Yasuhide Hirata , Yohei Yukizawa
DOI: 10.1080/10255842.2013.869320
关键词:
摘要: The mechanism underling bone mineral density (BMD) loss that occurs in the femur after total hip arthroplasty (THA) remains unknown. We compared equivalent stress and strain energy (SED) to BMD THA using subject-specific finite element analyses. Twenty-four patients who had undergone primary cementless were analysed. was measured dual-energy X-ray absorptiometry (DEXA) at 1 week 3, 6 12 months THA. Seven regions of interest (ROIs) defined accordance with Gruen's system (ROIs 1–7). Computed tomography images femurs acquired pre- postoperatively, converted into three-dimensional (FE) models. Equivalent SED analysed DEXA data. maintained year ROIs 4, 5 6, whereas decreased 1, 2 7. FE analysis revealed much higher than A significant correlati...
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