Iliotibial Band Syndrome

Iliotibial Band Syndrome is a common cause of outer knee pain that affects many people, especially runners and cyclists. It involves the iliotibial band, a thick band of tissue running along the outside of the thigh from the hip to the shin. When this band becomes tight or inflamed, it can rub against the outer part of the knee, causing pain and discomfort. This condition mainly affects the musculoskeletal system, particularly the structures around the knee joint. The pain often worsens with activities like running, cycling, or walking downhill. It can limit mobility and interfere with daily activities or sports performance. Understanding this condition helps explain why certain movements cause pain and how it impacts knee function.

Iliotibial Band Syndrome (ITBS) is an overuse injury characterized by inflammation and irritation of the iliotibial band as it passes over the lateral femoral epicondyle. The core pathology involves friction and compression of the iliotibial band against the lateral femoral condyle during repetitive knee flexion and extension, commonly seen in athletes engaging in running or cycling. This leads to localized pain and tenderness at the lateral knee, often accompanied by a snapping sensation. The syndrome results from biomechanical factors such as tightness of the iliotibial band, abnormal gait, or muscle imbalances. ITBS is a significant cause of lateral knee pain and can impair athletic performance and daily function. Diagnosis is clinical, supported by physical exam findings and exclusion of other causes of lateral knee pain.