Knee pain in running athletes is extremely common. In fact,  over 42% of running related injuries involve the knee according to a 2002 study in the British Journal of Spots Medicine.  Consequently, nearly 25% of runners develop knee pain each year.  https://www.youtube.com/watch?v=JvB6wm2kBlw Patellofemoral Pain Syndrome (PFPS) Patellofemoral pain is the most common cause of anterior knee pain in running athletes. In the past, the condition was  thought to be related to a patellar tracking issue.…