Multiple injury types can share similar mechanism and, therefore, similar biomechanical predictors. This data stratification depicts that knee abduction moment was both a predictor for ACL injury and PFPS. The ACL injury prediction was predicated by a greater abduction moment, so it is also possible that the magnitude of a biomechanical factor can be related to the magnitude of injury that it predicts. Image reproduced with permission from Myer, et al. 2015. Am J Sports Med, 49(2):118–122.