Imagine, a patient, needs a knee cartilage replacement surgery and after the initial MRI and X-Ray tests the patient is wheeled into the operation theatre, next to the life support equipment is a printer which prints out the patient's cartilage tissue. The surgeons operate on the ailing patient, replace the knee cartilage with the printed out cartilage, sew the patient up and in a few weeks' time the patient is back to his or her regular life. This could very well be the future of knee cartilage replacement surgery.