New Research (IMAGE) American Institute of Physics Caption New research shows that the kangaroo is a suitable alternative animal model for study of human shoulder cartilage biomechanics. Understanding the biomechanics of natural kangaroo shoulder cartilage could lead to the development of better artificial shoulder joint implants -- an increasingly important therapeutic option as the population ages and outlives the glide performance lifespan of joint cartilage. Credit YuanTong Gu/Queensland University of Technology Usage Restrictions This image may be used only with appropriate caption and 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.