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.
Why Heel Strike Running Destroys Your Knees, Despite Wearing Thick Cushioned Running Shoes and a Knee Brace!
Unlike forefoot running, the knee is most severely impacted in heel strike running because landing heel-first was found to cause the knee to automatically lock at landing, which not only contributed to an over-extended stride tied to longer, more intensive braking, it also caused the leg to lose its shock absorbing capability, resulting in greater-than-normal all-around impact levels.