Select the incorrect statement on total hip joint replacements: Ceramic femoral heads can be made stronger by decreasing grain size by adding MgO

Subject:Mechanical EngineeringPrice: Bought3

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Select the incorrect statement on total hip joint replacements:

1. Ceramic femoral heads can be made stronger by decreasing grain size by adding MgO.
2. Polymer liners can be made more resistant to wear by decreasing percent crystallinity.
3. Stress shielding occurs when the femoral stem has a higher elastic modulus than bone.
4. Metallic wear particles lead to osteolysis.