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首页> 外文期刊>Journal of Biomechanics >A contact algorithm for density-based load estimation.
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A contact algorithm for density-based load estimation.

机译：一种基于密度的负荷估算的接触算法。

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摘要

An algorithm, which includes contact interactions within a joint, has been developed to estimate the dominant loading patterns in joints based on the density distribution of bone. The algorithm is applied to the proximal femur of a chimpanzee, gorilla and grizzly bear and is compared to the results obtained in a companion paper that uses a non-contact (linear) version of the density-based load estimation method. Results from the contact algorithm are consistent with those from the linear method. While the contact algorithm is substantially more complex than the linear method, it has some added benefits. First, since contact between the two interacting surfaces is incorporated into the load estimation method, the pressure distributions selected by the method are more likely indicative of those found in vivo. Thus, the pressure distributions predicted by the algorithm are more consistent with the in vivo loads that were responsible for producing the given distribution of bone density. Additionally, the relative positions of the interacting bones are known for each pressure distribution selected by the algorithm. This should allow the pressure distributions to be related to specific types of activities. The ultimate goal is to develop a technique that can predict dominant joint loading patterns and relate these loading patterns to specific types of locomotion and/or activities.
机译：已经开发出一种算法，其中包括关节内的接触相互作用，以基于骨骼的密度分布来估计关节中的主要载荷模式。该算法被应用于黑猩猩，大猩猩和灰熊的股骨近端，并与使用基于密度的非接触（线性）负荷估算方法的同行论文中的结果进行了比较。接触算法的结果与线性方法的结果一致。尽管接触算法比线性方法复杂得多，但它具有一些其他优点。首先，由于两个相互作用表面之间的接触被合并到负荷估算方法中，因此通过该方法选择的压力分布更有可能指示体内发现的压力分布。因此，算法预测的压力分布与负责产生给定骨密度分布的体内负荷更加一致。另外，对于由算法选择的每个压力分布，相互作用的骨骼的相对位置是已知的。这应使压力分布与特定类型的活动有关。最终目标是开发一种技术，该技术可以预测主要的关节负荷模式并将这些负荷模式与特定类型的运动和/或活动相关联。

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