A partnership between the Technion Institute of Technology and the Sheba Medical Center has successfully biofabricated a human auricle with a 3D-printed scaffold and cartilage grown from the patient's own cells. So far, children with microtia have had to undergo painful costal cartilage grafts and wait until age 10 to have their undeveloped ears surgically reconstructed. The 3D-printed prosthetic ear method can be used from age six and is much less invasive.
https://www.notebookcheck.net/3D-printed-prosthetic-ear-made-with-biodegradable-material-tech-may-be-used-for-other-cartilage-implants.588873.0.html