We have sufficiently advanced medicine to the point that artificial body parts are no longer science fiction. In fact, we may even start 3D printing organs, or have them grown in a lab. However, their artificial nature often means they won’t grow with a patient. For example, children need to undergo repeated surgeries until adulthood to replace implants they have outgrown.
Via THE OFFICIAL ANDREASCY, guillaume riottot
This could reduce treating children's congenital heart defects to a single surgery.