0
research-article

Finite Element Modelling to understand the influence of acetabular shell design, liner material and subject parameters on biomechanical response in the periprosthetic bone

[+] Author and Article Information
Subhomoy Chatterjee

Materials Research Centre, Indian Institute of Science, Bengaluru, Karnataka, India; Translational Center on Biomaterials for Orthopaedic and Dental Applications, Indian Institute of Science, Bengaluru, Karnataka, India
subho.mpo@gmail.com

Sabine Kobylinski

Materials Research Centre, Indian Institute of Science, Bengaluru, Karnataka, India; Centre for BioSystems and Engineering, Indian Institute of Science, Bengaluru, Karnataka India; Technical University of Applied Sciences Regensburg (OTH Regensburg), Regensburg, Germany
sabine.kobylinski@st.oth-regensburg.de

Bikramjit Basu

Materials Research Centre, Indian Institute of Science, Bengaluru, Karnataka, India; Translational Center on Biomaterials for Orthopaedic and Dental Applications, Indian Institute of Science, Bengaluru, Karnataka, India; Centre for BioSystems and Engineering, Indian Institute of Science, Bengaluru, Karnataka India
bikram@iisc.ac.in

1Corresponding author.

ASME doi:10.1115/1.4040249 History: Received January 08, 2018; Revised May 06, 2018

Abstract

Innovated acetabular shell designs of total hip replacement have been found to be better than the conventional hemispherical design in terms of component stability. In this study, the impact of shell design (conventional, finned, spiked and combined design) and liner material on the biomechanical response of periprosthetic bone has been analysed through finite element method. Two different liner materials: HDPE-20%HA-20%Al2O3 and highly cross linked ultrahigh molecular weight polyethylene (HC-UHMWPE) were used. The subject parameters included bone condition and bodyweight. Physiologically relevant load cases of a gait cycle were considered. The deviation of mechanical condition of the periprosthetic bone due to implantation was least for the finned shell design. No significant deviation was observed at the bone region adjacent to the spikes and the fins. This study recommends the use of the finned design, particularly for weaker bone conditions. For stronger bones, the combined design may also be recommended for higher stability. The use of HC-UHMWPE liner was found to be better for convensional shell design. However, closer biomechanical environment was found for both the liner materials in case of other shell designs. Overall, the study establishes the biomechanical response of pre-clinically tested liner materials together with new shell design for different subject conditions.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In