Researchers at the University of Pittsburgh Swanson School of Engineering and McGowan Institute for Regenerative Medicine have created a new material which is made from 3d printed iron and manganese. The material can be used with amazing results as a scaffolding for bones.

http://3dprint.com/1604/3d-printed-b...lding-created/

Unlike plastics or solid iron which are commonly used in bone scaffolding today, this new 3d printed material has much better results, and will ultimately be used with all sort of human tissue. The material has the ability to biodegrade over time much quicker than that of solid Iron, and can be printed out to fit the patient's needs.