Figure 1.

Example of dynamic lower extremity valgus: A combination of motions and rotations at all 3 lower extremity joints, potentially including hip adduction and internal rotation, knee (tibial) abduction, tibial external rotation and anterior translation and ankle eversion.

Figure reproduced from Hewett, TE, et al. Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: A prospective study. Am J Sports Med. 2005;33(4):492-501. Used with permission, Sage Publications.