Ever been 3km into your run, or 10km into your bike ride and start to feel a pain on the outside of your knee like you’ve been stabbed with a hot knife!? It could be iliotibial band (ITB) syndrome (also known as ITB friction or ITB compression syndrome). If you are a regular runner or cyclist you may be well aware of the love/hate relationship we have with our ITB.
But what is it?