Iliotibial band (ITB) syndrome is an overuse injury of the fascia (connective tissue) that runs along the outer thigh from the pelvis to the top of the tibia, crossing both the hip and knee joints. The role of the ITB is to work with its associated muscles to stabilise the leg in running and walking, during the stance phase (when the foot strikes the ground through to propulsion). It also plays a role in abduction of the thigh.
ITB syndrome is one of the most common causes of what we know as ‘runner’s knee’ and accounts for up to 22% of overuse injuries in runners.
Some of the common causes of ITB Syndrome include:
- Dramatic increases in training load
- Lack of flexibility in the hip flexors, quads, and TFL muscles
- Weakness of the hip abductor muscles
You can find out more about ITB syndrome here.