Runners Knee Syndrome or Ililio Tibial Band Friction Syndrome (ITBFS) is a painful overuse injury that effects the knee. Common in both runners and cyclist, running knee syndrome, commonly starts as intermittent pain, sharp in nature and very focal. If this pain is ignored, it can become a dull ache even when you are not running or cycling becoming painful when you go up or down stairs. Common causes of runners knee The two most common causes of runners knee are inappropriat