Effect of prosthesis liner material properties on interface stresses between stump and trans-tibial socket

Chu Lung Wu, Chih Chieh Lin, Kien Jung Wang, Chih-Han Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The liner materials of transtibial sockets have a direct influence on the stump-socket interface stress via its elastic property. The aim of this study is to evaluate the biomechanical efficiency of silicone liner, within a total surface bearing (TSB) socket by comparing with other three commonly used liner materials: soft pelite, regular plasyazone and poron within two finite element models of varied geometries. All subjects have been informed and agreed for suffering the computer tomography scan. Based on the images of computer tomography, the three-dimensional finite element models have been constructed. The surface-to-surface contact elements were employed at the stump-socket interface. All elements were assumed to be isotropic and linear elastic except for the material of silicone liner which assigned to be multi-linear elastic properties. The simulated results showed as the increasing of the elastic modulus of liner, interface pressure also increased. Generally, the lowest peak pressure of interface pressures of silicone liner demonstrated the nonlinear behavior can provide a good performance of load shearing. However, the results also showed the influence of stiffness of liner is limit to cause the interface redistribution.

Original languageEnglish
Title of host publicationProceedings of the Fifth IASTED International Conference on Biomechanics, BioMech 2007
Pages135-140
Number of pages6
Publication statusPublished - 2007
Event5th IASTED International Conference on Biomechanics, BioMech 2007 - Honolulu, HI, United States
Duration: 2007 Aug 202007 Aug 22

Other

Other5th IASTED International Conference on Biomechanics, BioMech 2007
CountryUnited States
CityHonolulu, HI
Period07-08-2007-08-22

Fingerprint

Silicones
Prostheses and Implants
Materials properties
Pressure
Tomography
Bearings (structural)
Elastic Modulus
Shearing
Elastic moduli
Stiffness
Geometry

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Mechanical Engineering

Cite this

Wu, C. L., Lin, C. C., Wang, K. J., & Chang, C-H. (2007). Effect of prosthesis liner material properties on interface stresses between stump and trans-tibial socket. In Proceedings of the Fifth IASTED International Conference on Biomechanics, BioMech 2007 (pp. 135-140)
Wu, Chu Lung ; Lin, Chih Chieh ; Wang, Kien Jung ; Chang, Chih-Han. / Effect of prosthesis liner material properties on interface stresses between stump and trans-tibial socket. Proceedings of the Fifth IASTED International Conference on Biomechanics, BioMech 2007. 2007. pp. 135-140
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Wu, CL, Lin, CC, Wang, KJ & Chang, C-H 2007, Effect of prosthesis liner material properties on interface stresses between stump and trans-tibial socket. in Proceedings of the Fifth IASTED International Conference on Biomechanics, BioMech 2007. pp. 135-140, 5th IASTED International Conference on Biomechanics, BioMech 2007, Honolulu, HI, United States, 07-08-20.

Effect of prosthesis liner material properties on interface stresses between stump and trans-tibial socket. / Wu, Chu Lung; Lin, Chih Chieh; Wang, Kien Jung; Chang, Chih-Han.

Proceedings of the Fifth IASTED International Conference on Biomechanics, BioMech 2007. 2007. p. 135-140.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Wu CL, Lin CC, Wang KJ, Chang C-H. Effect of prosthesis liner material properties on interface stresses between stump and trans-tibial socket. In Proceedings of the Fifth IASTED International Conference on Biomechanics, BioMech 2007. 2007. p. 135-140