… and Titanium foamy goodness. Titanium foam is just as flexible and rigid as real human bone

The secret behind the new titanium foam implants is a foam-like structure that resembles spongiosa inside human bones, and a powder metallurgy-based molding process that consists of open-cell polyurethane (PU) foams being saturated with a solution that contains a binding medium and a fine titanium powder. The powder adheres to the foams cellular structures, and the binding agents and the PU are vaporized. The end result is a “semblance of the foam structures, which is ultimately sintered.”