Runners Knee More Condition_symptoms How Do Regular Marathon Runners Prevent Knee Injury?

How do regular marathon runners prevent knee injury? - runners knee more condition_symptoms

A marathon runner shows an average of 40 miles per week training 6 to 8 months before the competition, not all knee problems? What's your secret? I am a nice surprise that most drivers in the late 30s also. Runner You Inplant surgery?
With that kind of mileage, even the best running shoes on the runway prevented the realization of flexible cartilage.