Abstract
An elastohydrodynamic lubrication (EHL) for McKee-Farrar metal-on-metal hip prosthesis was analyzed under steady state entraining motion. Large femoral head and thin acetabular cup were identified as important features in reducing contact stresses and promoting fluid-film lubrication. An increase in the femoral head radius from 14 to 17.4 mm was shown for the typical McKee-Farrar metal-on-metal hip prosthesis under typical walking conditions. The results show that the predicted maximum contact pressure considering both the cement and bone decreased by about 80 percent and the minimum film thickness was predicted to increase by 50 percent.
| Original language | English |
|---|---|
| Pages (from-to) | 27-34 |
| Number of pages | 8 |
| Journal | Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine |
| Volume | 218 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2004 |
| Externally published | Yes |
Keywords
- Elastohydrodynamic lubrication
- Finite element
- Metal-on-metal hip prosthesis