IT Band Syndrome Explained

In brief: Iliotibial band syndrome is a common overuse injury felt as sharp or burning pain on the outside of the knee. The iliotibial band is a long band of connective tissue running down the outer thigh, and the syndrome develops when it becomes irritated near the knee, often from high mileage, downhill running or weak hip muscles. It frequently appears at a consistent point in a run and eases with rest, then returns when running resumes too soon.

What is IT band syndrome?

The iliotibial band, or IT band, is a thick band of connective tissue that runs from the hip down the outside of the thigh to just below the knee. IT band syndrome is an overuse condition where the band and the tissue beneath it become irritated near the outer knee, producing pain. It is one of the leading causes of lateral, meaning outer, knee pain in distance runners and cyclists.

What causes it in runners?

It is classically a training-load injury, often appearing after a sudden increase in mileage or a block of downhill running, which loads the outer knee repeatedly. Weakness in the hip abductor muscles, which stabilise the pelvis, is a common underlying factor, as is running on a cambered surface or in worn shoes. Tightness through the hip and outer thigh can add to the irritation.

Symptoms to recognise

The typical sign is a sharp or burning pain on the outside of the knee, sometimes radiating up the thigh. A telling feature is that it often comes on at a fairly predictable time or distance into a run and gets worse if you continue, especially downhill. The pain commonly settles quickly with rest, only to return at a similar point the next time out.

Treatment and recovery

Early management focuses on calming the irritation by reducing mileage and avoiding the downhill running that provokes it. The longer-term fix is usually strengthening the hip and gluteal muscles to improve pelvic control, alongside work on mobility through the hip. Foam rolling the outer thigh is widely used for short-term relief, though the lasting benefit comes from addressing the strength and load issues. A physiotherapist can guide a graded return.

IT Band Syndrome and your running kit at OD's

Replacing worn-out shoes before they lose their support, and avoiding always running on the same cambered side of the road, both help reduce the repetitive load that aggravates the IT band. At OD's Designer Clothing we stock premium running footwear from On, Saucony and Salomon, with fitting help in our St Helens store. We offer next-day delivery and free click and collect.

Please note: This guide is general information for runners, not medical advice. If you have pain that is severe, persistent or getting worse, see a GP, physiotherapist or qualified sports clinician for diagnosis and treatment.