A comparative study of wear laws for soft-on-hard hip implants using a mathematical wear model

作者：Mattei L^*; Di Puccio F; Ciulli E

来源：Tribology International, 2013, 63: 66-77.

DOI：10.1016/j.triboint.2012.03.002

• Hip replacement
• Wear prediction
• Cross-shear
• Wear model

Wear of UHMWPE acetabular components is the most serious threat to the long-term success of hip replacements. Consequently numerical and experimental wear simulations are of great interest. The present study proposes a mathematical wear model and compares the most recent wear laws, based on the so-called cross-shear (CS) effect. Simulations highlighted the variability of wear predictions with the wear factors/laws. Moreover a sensitivity analysis underlined that the kinematic conditions affect volumetric/linear wear more than the loading ones. This study confirms the importance of the CS in wear predictions even if some critical issues are still open, requiring further investigations.

• 出版日期2013-7