期刊
TRIBOLOGY INTERNATIONAL
卷 129, 期 -, 页码 162-166出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2018.08.009
关键词
Polyethylene wear; Finite element method; Component orientation; In-vivo kinematics
资金
- Mako Surgical
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 mm(3)/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.
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