3D printed vertebrae implanted in 'world first' surgery

An Australian neurosurgeon has performed what he has described as a described as a "world first" by removing cancerous vertebrae and implanting in their place 3D printed vertebrae.
Ralph Mobbs, who was interviewed by ABC News in Australia, performed the surgery in late 2015 on a patient with chordoma, a rare form of cancer that occurs in the bones of the skull and spine. The 60 year old patient was affected in the two vertebrae responsible for turning the head -- m