We did not implement any form of training in this study, nor did we instruct subjects to alter their valgus patterns in any way during movement trials. Hence, the true potential for the 2D method as a training evaluation tool remains speculative. More work is necessary to determine whether long term modifications to valgus motions are possible, and, if so, by what magnitude they can realistically be changed, before inclusion of 2D video as an evaluation can seriously be considered