Dobbs H S
J Bioeng. 1977 Aug;1(3):189-96.
The paper presents a probability model for the fracture of femoral components based on the assumption that the components are defect-free, and that they fracture by a fatigue process. The model predicts the probability of fracture for patients of different body weight, and the incidence of fractures versus body weight, and versus time. The results are compared with recently published survey data. In addition the model is used to demonstrate the effect of improvements in the mechanical properties of components. Finally the paper discusses the modifications needed to demonstrate the effect of variations in component design, prosthesis orientation, and level of patient activity, and the effect of time-dependent processes such as bone resorption, acrylic disintegration and shock loads.
本文基于股骨组件无缺陷且因疲劳过程而断裂的假设，提出了一种股骨组件骨折的概率模型。该模型预测了不同体重患者的骨折概率、骨折发生率与体重以及与时间的关系。将结果与最近发表的调查数据进行了比较。此外，该模型还用于展示组件机械性能改善的效果。最后，本文讨论了为证明组件设计、假体方向和患者活动水平的变化以及诸如骨吸收、丙烯酸分解和冲击载荷等时间相关过程的影响所需进行的修改。
