Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooIliotibial Band Friction Syndrome

Knee

What It Is

Line drawing of the outer thigh, showing the IT band running from the hip and glutes down the side of the thigh, over the outer quadriceps, to just below the knee.
The IT band is fascia rather than muscle, which is why the work goes into the muscles that pull on it and the tissue around it.

Iliotibial band (ITB) syndrome is one of the most common overuse injuries in runners (Fairclough et al., 2006), and it also affects cyclists (MedlinePlus, 2025). The iliotibial band is a tough band of tissue that runs down the outer part of the thigh, from the top of the pelvic bone to just below the knee (MedlinePlus, 2025). It helps to stabilise the outside of the knee. In ITB syndrome, the tissues at the outside of the knee become irritated and painful, and running can become painful. The pain can become so severe that runners are sidelined for weeks, if not longer.

You may hear ITB syndrome called "runner's knee", but that name is usually used for a different problem, patellofemoral pain syndrome, which causes pain at the front of the knee around the kneecap (AAOS, n.d.). ITB syndrome is usually diagnosed from your description of the symptoms and an examination, including pressing along the band to find the most tender area (MedlinePlus, 2025). The pain is on the lateral (outside) part of the knee. At first it may come on when you start exercising and ease as you warm up; over time it can get worse and not go away during exercise. Running downhill, or sitting for a long time with your knee bent, may make it worse (MedlinePlus, 2025).

Iliotibial Band Friction Syndrome Anatomy

ITB syndrome is one of the main causes of pain on the outside of the knee in runners (Fairclough et al., 2006). The ITB is a thick band of fascia (connective tissue) that runs from the outer part of the pelvis, down the outside of the thigh and over the outside of the knee, and attaches to a small bump on the shin bone just below the knee (Fairclough et al., 2006).

For many years the pain was thought to come from the band rubbing ("friction") over a bony bump on the outside of the thigh bone (the lateral femoral epicondyle) as the knee bends and straightens repeatedly during running (MedlinePlus, 2025). More recent research suggests the band is firmly anchored to the thigh bone and does not actually slide back and forth; instead, the pain may come from the band compressing a sensitive layer of fatty tissue underneath it (Fairclough et al., 2006).

The ITB wraps around a muscle called the tensor fasciae latae (TFL), which attaches to the pelvis, and it also receives fibres from the gluteus maximus (buttock muscle) (Fairclough et al., 2006). This has led some to feel that a tight gluteus maximus can contribute to ITB syndrome.

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

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