Selective laser melting of porosity graded lattice structures for bone implants

Porosity-graded lattice structures are used in bone implants to mimic natural bone properties. Rather than having uniform pore size distribution, the size distribution is gradually changed in a certain direction to achieve specific mechanical and biological properties. Selective laser melting (SLM) has been used to print uniform metallic lattice structures with high accuracy. However, the accuracy of SLM in printing lattice structures with a …