This study seems to show a relationship between iliotibial band (ITB) syndrome and knee adduction (genu varum) and the activation of the TFL. A relationship can be two incidents that occur together, termed a “coincidence.” Or there can be a causal relationship between them; i.e., one causes the other to occur.
Once one joint/structure/tissue is injured, compensation patterns usually occur in which the individual offloads physical stress to other areas of the body. This would logically lead to an increased risk of use/overuse/misuse/abuse to these other areas, likely eventually leading to injury.
Perhaps the difference in physical activity explains the controversial results regarding Vastus medialis obliquus and Vastus Lateralis engagement.