Man, modern medicine is getting more Frankensteinian by the day — and I mean that in the good sense. Doctors in German have invented a technique that lets you grow new bone parts to be implanted in different parts of your body. Recently, they studied a man who needed a new jawbone part. They made a 3D model of the bone part, crafted it in titanium, and implanted it in his right shoulder blade.

The result? The shoulder blade interprets the titanium as part of itself and grows new bone around it. Presto: One new bone, grown by your own body. And the best part, as the doctor told the BBC:

He said implanting the cage into the patient’s muscle meant his own tissue developed around it.

“Because it was his own tissue, we don’t expect any problems of rejection.”

(Thanks to Jonathan Korman for this one!)