North Carolina State University Researchers developed a “METAL FOAM” having similar elasticity to bone heading to a new generation of implants that avoid bone rejection.
- lighter than solid aluminum
- “extraordinarily high-energy absorption capability”
- light weight
- modulus of elasticity similar to that of bone.
- its rough surface foster bone growth into the implant
Modulus of elasticity
- “If the modulus of elasticity of the implant is too much bigger than the bone, the implant will take over the load bearing and the surrounding bone will start to die,”
- “This will cause the loosening of the implant and eventually ends in failure.
Avoiding stress shielding- modulus of elasticity for the foam is much closer to the 10 to 30 GPa of natural bone than the 100 GPa of titanium.
- light weight of the foam is attributed to its porous nature.
- on ability of the foam to avoid taking on too much load bearing from the surrounding bone “composite foam can be a perfect match as an implant to prevent stress shielding.”