The SAM Walker (IMAGE) NASA/Goddard Space Flight Center Caption NASA-developed technology was the basis for SAM, a wheeled walker that supports a patient ’s upper body weight and pelvis, and mimics hip joint movement. Credit NASA Usage Restrictions None 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.