Heel strike running appears to be the root of running injury. Knee injury can be easily avoided with forefoot running barefoot or in barefoot like running shoes.
How Should Your Posture Be When Running?
Leaning slightly forward when running proved more effective at engaging better leg swing control that prevents an over-stride, and results in significantly less impact at the knee, while providing more economical benefits, too, as compared with running too upright with your torso.