The first-ever knee cartilage in microgravity was made on the International Space Station. Redwire Corp. says the meniscus will assist with treating military personnel and aging seniors on Earth.

Astronauts just 3D-printed knee cartilage in space for the 1st time and it's as weird as it sounds

Source: space
Source Link: https://www.space.com/international-space-station-knee-cartilage-3d-printed