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Estimation of conditions evoking fracture in finger bones under pinch loading based on finite element analysis

Author

Listed:
  • Jonas A. Pramudita
  • Seiji Kamiya
  • Sadayuki Ujihashi
  • Hyung-Yun Choi
  • Masato Ito
  • Ryoji Watanabe
  • Jeff R. Crandall
  • Richard W. Kent

Abstract

A finger finite element (FE) model was created from CT images of a Japanese male in order to obtain a shape-biofidelic model. Material properties and articulation characteristics of the model were taken from the literature. To predict bone fracture and realistically represent the fracture pattern under various loading conditions, the ESI-Wilkins-Kamoulakos rupture model in PAM-CRASH (ESI Group S.A., Paris, France) was utilized in this study with parameter values of the rupture model determined by compression testing and simulation of porcine fibula. A finger pinch simulation was then conducted to validate the finger FE model. The force-displacement curve and fracture load from the pinch simulation was compared to the result of finger pinch test using cadavers. Simulation results are coincident with the test result, indicating that the finger FE model can be used in an analysis of finger bone fracture during pinch accident. With this model, several pinch simulations were conducted with different pinching object’s stiffness and pinching energy. Conditions for evoking finger bone fracture under pinch loading were then estimated based on these results. This study offers a novel method to predict possible hazards of manufactured goods during the design process, thus finger injury due to pinch loading can be avoided.

Suggested Citation

  • Jonas A. Pramudita & Seiji Kamiya & Sadayuki Ujihashi & Hyung-Yun Choi & Masato Ito & Ryoji Watanabe & Jeff R. Crandall & Richard W. Kent, 2017. "Estimation of conditions evoking fracture in finger bones under pinch loading based on finite element analysis," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 20(1), pages 35-44, January.
    • Handle: RePEc:taf:gcmbxx:v:20:y:2017:i:1:p:35-44
    DOI: 10.1080/10255842.2016.1196197
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    References listed on IDEAS

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    1. Hans Liebl & Eduardo Grande Garcia & Fabian Holzner & Peter B Noel & Rainer Burgkart & Ernst J Rummeny & Thomas Baum & Jan S Bauer, 2015. "In-Vivo Assessment of Femoral Bone Strength Using Finite Element Analysis (FEA) Based on Routine MDCT Imaging: A Preliminary Study on Patients with Vertebral Fractures," PLOS ONE, Public Library of Science, vol. 10(2), pages 1-15, February.
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