Scientists demonstrate a novel way of using porous structures as a drug-delivery vehicle that can help boost the integration of host tissue with surgically implanted titanium. Instead of being acted upon by the body as an impenetrable foreign object, the synthetic bone replacement — currently being tested in rabbits — features a porous material that allows for the delivery of “microencapsulated bioactive cues” that speed up the growth of host tissue at the site and allow for the growth of new bone.