Some of us require special orthopaedic implants to correct the scourge of "flat feet", and as such they must be custom-made to fit each person's foot. You might think this is a perfect candidate for 3D printing technology, which can produce customized implant shapes on demand. This is precisely what EOS has done with their new laser-sintered orthopaedic implants. Even better, their equipment can pump them out en masse. According to EOS:
Modern data preparation software in combination with laser-sintering can be used to create complex geometries, porous surfaces suitable for better osteointegration or lightweight structures to promote better patient comfort.
We're not quite sure what "osteointegration" is, but we sure like the look of these implants.