Computational modeling of polyethylene wear in total hip arthroplasty using patient-specific kinematics-coupled finite element analysis

Yun Peng, Paul Arauz, Shuai An, Young Min Kwon

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Computational modeling of polyethylene wear based on patient-specific gait kinematics and component orientation remains lacking. This study aimed to quantify the polyethylene wear among 48 total hip arthroplasty (THA) using patient-specific data through a computational model incorporating the cross-shear effect. Strong patient variations were observed in volumetric wear rate (54.1 ± 13.9 mm3/year) and linear wear rate (0.20 ± 0.08 mm/year). Regression analysis demonstrated that axial plane rotation, in light of its influence on cross-shear effect, plays an important role in polyethylene wear. The computational model based on patient-specific gait kinematics and component orientation provides a useful tool to investigate the in-vivo polyethylene wear.

Original languageEnglish
Pages (from-to)162-166
Number of pages5
JournalTribology International
Volume129
DOIs
StatePublished - Jan 2019
Externally publishedYes

Keywords

  • Component orientation
  • Finite element method
  • In-vivo kinematics
  • Polyethylene wear

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