Knee (IMAGE) University of Eastern Finland Caption This is an illustration of the composition of articular cartilage (A) and a sagittal view of human knee joint (B). Credit Janne Mäkelä Usage Restrictions Please mention the photo credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.