Degenerative joint diseases like arthritis affect millions of people around the world, and range in severity from somewhat annoying to severely debilitating. While scientists have been trying for decades to create cartilage in the lab, it's proved to be difficult, especially when it comes to the complex, load-bearing cartilage in the knee. So it's quite a breakthrough that Indian researchers have managed to develop cartilage that is molecularly similar to that in the knee, using 3D bioprinting. Read more at 3DPrint.com: http://3dprint.com/176176/3d-bioprinted-knee-cartilage/