Iliotibial band syndrome
Iliotibial band syndrome is an overuse friction injury of runners and cyclists causing lateral knee and distal thigh pain, diagnosed at the bedside with a positive Noble compression test and treated first with activity modification, ice, and hip abductor strengthening rather than imaging or surgery.
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What this article covers
- Overview
Iliotibial band syndrome (ITBS) is an overuse friction injury in which the distal iliotibial band repeatedly rubs against the lateral femoral epicondyle during repetitive knee flexion and extension…
- Epidemiology
A common cause of lateral knee pain in runners, occurring across recreational and competitive distance runners as a classic overuse pattern.
- Risk factors
Running, particularly outdoors or downhill, which worsens symptoms and is the dominant precipitant.
- Pathophysiology
The iliotibial band runs from the hip abductor muscles, superficial to them, down to insert near the lateral tibia, crossing over the lateral femoral epicondyle.
- Clinical features
Poorly localized lateral knee and distal thigh pain is the hallmark and defining feature: this is a clinical diagnosis, and the diagnostic criterion is reproducing this pain with repeated knee…
- Differential diagnosis
Lateral meniscal injury: usually post-traumatic rather than insidious in onset, with pain in the lateral joint line and a positive McMurray or Thessaly test, in contrast to the negative Noble test result expected in ITBS.
- Diagnosis
Iliotibial band syndrome is a clinical diagnosis, established when repeated flexion and extension of the supine patient's knee with examiner pressure over the lateral femoral condyle (the Noble test)…
- Management
First, have the patient abstain from the inciting activity (running or resistance cycling) and apply ice to the lateral knee during the acute symptomatic phase; continuing the aggravating activity…
- Complications
Chronic or recurrent lateral knee pain from incomplete rehabilitation or premature return to full training volume, the most common adverse course.
- Prognosis
Most patients improve with activity modification, ice, and a graded return-to-activity program, without requiring injection or surgery.
- Prevention
Increase running or cycling training volume or intensity by no more than approximately 10% per week, avoiding abrupt week-over-week increases in distance and speed that outpace tissue adaptation.
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- Overuse injuries of the knee
Overuse knee injuries, including patellofemoral pain syndrome, iliotibial band syndrome, pes anserine bursitis, and patellar or quadriceps tendinopathy, present with activity-related pain without a traumatic event and are diagnosed clinically by pain location, then managed with activity modification, cryotherapy, NSAIDs, and targeted physical therapy.
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