Biomedical Engineering Reference
In-Depth Information
cup may be in polymer or ceramic and contacts a metallic or ceramic
femoral head. Indeed, each material is used for its own properties:
metals are needed when the device endures high mechanical loads;
bioinert ceramics or high-strength polymers possess a wear resistance
that limits debris generation from pieces which undergo friction;
bioactive ceramics are used in coating to form direct chemical bonds
with bones and ensure the implant stability without the use of cements
[PAT 12].
Figure 3.1.
Young's modulus versus strength materials selection
chart (data from [ASH 89, KNO 11])
