If you’ve experienced pain on the outside of your knee, you may have IT band syndrome or iliotibial band syndrome (sometimes referred to as "tight IT band" or "ITBS"). This is a common condition in competitive athletes and other active people.
This iliotibial tract or "IT band" is a long, fibrous band of flexible fascia that extends from the hip to just below the outside of the knee. It also has an attachment to the outside of your knee cap.
IT band syndrome is a common overuse injury, causing pain at the outside of the knee. It is typically seen in runners and cyclists. Competitive rowers, skiers, and athletes playing soccer, basketball, and field hockey may also experience IT band syndrome.
The most common symptom of IT band syndrome is pain located on the outside of the knee that increases as a person runs, cycles or performs other exercises that involve repetitive bending and straightening of the knee. One may also experience a feeling of clicking, popping or snapping on the outside of the knee.
The cause of IT band syndrome is controversial. It is commonly thought to be caused by the friction of repeatedly bending and straightening the knee that leads to inflammation of the area under the IT band. Other studies suggest it is actually the result of compressive forces to a fat pad that is deep to the IT band. Another theory suggests chronic inflammation of the IT band bursa.
There are various individual factors and training practices that may place excessive stress on the IT band and put athletes at risk:
If you think you may have IT band syndrome, you should consult a sports medicine physician, physiatrist or physical therapist. The doctor will interview you about your medical history and symptoms and conduct an exam to determine whether you have IT band syndrome or a different condition that may have similar symptoms, such as runner's knee, meniscus injuries, or stress fracture. If IT band syndrome is suspected, a physical therapist can work with you to identify your individual risk factors and start a treatment and prevention strategy.
Find a doctor at HSS who can diagnose and treat IT band syndrome.
The key treatment for IT band syndrome is to rest from the activity that is causing the pain. This should be followed up with a consultation with a physical therapist who can help determine the causes of your IT band syndrome and provide exercises and cross-training tips in addition to reviewing your risk factors. Addressing improper running form and poor bike fit are additional interventions that are important in a comprehensive treatment plan. After a physical therapy program is completed, competitive athletes should consider working with a fitness professional or athletic trainer to design training workouts that will help prevent recurrence.
Prevention of IT band syndrome is geared toward correcting any individual risk factors or training errors that contributed to the injury. A comprehensive exercise program includes flexibility, strength training and gaining correct control at the pelvis, hips, knees, foot and ankle. Be sure to consult a health and fitness professional before participating in a new training or rehabilitation program.
Hadeed A, Tapscott DC. Iliotibial Band Friction Syndrome. StatPearls. StatPearls Publishing; 2022.
Geisler PR. Current clinical concepts: synthesizing the available evidence for improved clinical outcomes in iliotibial band impingement syndrome. J Athl Train. 2021; 56(8):805-815.
Strauss EJ, Kim S, Calcei JG, Park D. Iliotibial band syndrome: evaluation and management. J Am Acad Orthop Surg. 2011; 19(12):728-36.
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