The most common causes of running related knee pain is patellofemoral pain syndrome (PFPS) or runner’s knee.  Though there are other causes of knee pain from running, patellofemoral pain account for most running related knee injuries.  This is a repetitive strain injury and often become a chronic problem if not treated properly. 

Also know as anterior knee pain, knee pain from also a large number of cyclists and other athletes.  PFPS is an injury with pain mainly in front of the knee (anteri...