The Landing Error Scoring System (IMAGE) Drexel University Caption The Landing Error Scoring System (LESS) is a clinical assessment tool used to identify individuals at risk for lower extremity problems, such as ACL injury. Credit Drexel University 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.