Techmedica has supplied 2,000 patients with replacement bones and joints.

He flexed his hands, full of plastic replacement bones, and found them as easily his own as before they were last crunched.

Although not typically thought of as organs, one might also consider replacement bone, and joints thereof, such as hip replacements, in this context.

Gortex, a chemical sibling of Teflon, provides an inert mesh of porous scaffolding on which replacement bone cells can be grown in desired patterns.

Researchers at Washington State University develop an artificial bone "scaffold" which can be produced using 3D printers, potentially allowing doctors to quickly print replacement bone tissue for injured patients.