4.6 Article

Stress distribution in the bonobo (Pan paniscus) trapeziometacarpal joint during grasping

期刊

PEERJ
卷 9, 期 -, 页码 -

出版社

PEERJ INC
DOI: 10.7717/peerj.12068

关键词

Stress distribution; Trapeziometacarpal joint; Bonobo; Pan paniscus; Carpometacarpal joint; Finite element; Joint morphology

资金

  1. KU Leuven [RQ1-D1114-C14/16/082]
  2. Research Foundation Flanders [V415519N]

向作者/读者索取更多资源

This study investigated differences in stress distributions within the TMC joint associated with five grasping types commonly used by bonobos. The findings showed a high agreement between simulated and expected stress patterns for each grasp, with variations attributed to individual morphological features. This study provides valuable insight into the form-function interactions in the TMC joint of the bonobo, highlighting the impact of interindividual morphological variation on joint functioning.
The primate thumb plays a central role in grasping and the basal trapeziometacarpal (TMC) joint is critical to its function. The TMC joint morphology varies across primates, yet little is known about form-function interaction within in the TMC joint. The purpose of this study was to investigate how stress distributions within the joint differ between five grasping types commonly employed by bonobos (Pan paniscus). Five cadaveric bonobo forearms were CT scanned in five standardized positions of the hand as a basis for the generation of parametric finite element models to compare grasps. We have developed a finite element analysis (FEA) approach to investigate stress distribution patterns in the TMC joint associated with each grasp type. We hypothesized that the simulated stress distributions for each position would correspond with the patterns expected from a saddle-shaped joint. However, we also expected differences in stress patterns arising from instraspecific variations in morphology. The models showed a high agreement between simulated and expected stress patterns for each of the five grasps (86% of successful simulations), while partially (52%) and fully (14%) diverging patterns were also encountered. We identified individual variations of key morphological features in the bonobo TMC joint that account for the diverging stress patterns and emphasized the effect of interindividual morphological variation on joint functioning. This study gives unprecedented insight in the form-function interactions in the TMC joint of the bonobo and provides an innovative FEA approach to modelling intra-articular stress distributions, a valuable tool for the study of the primate thumb biomechanics.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据