Things worth knowing about "Iliotibial Band Syndrome"
Iliotibial band syndrome is a common overuse injury of the knee affecting mainly runners and cyclists, causing pain on the outer side of the knee.
What is Iliotibial Band Syndrome?
Iliotibial band syndrome (ITBS) is one of the most common causes of lateral knee pain in endurance athletes. It develops when the iliotibial band – a thick strip of connective tissue running from the hip along the outer thigh to the shinbone – becomes irritated or inflamed as it repeatedly rubs against the lateral femoral epicondyle during physical activity. Runners, cyclists, and triathletes are most commonly affected.
Causes
ITBS is an overuse injury caused by repetitive flexion and extension of the knee. Common contributing factors include:
- Rapid increases in running mileage or training intensity
- Weakness of the hip abductor and gluteal muscles
- Lower limb malalignment (e.g., genu varum / bow legs)
- Inappropriate footwear or insufficient cushioning
- Running on banked or uneven surfaces
- Insufficient recovery time between training sessions
Symptoms
The hallmark symptom of ITBS is a sharp or burning pain on the outer side of the knee that typically appears after a predictable distance of running and worsens if activity continues. The pain usually subsides with rest but quickly returns upon resuming exercise. Additional symptoms may include:
- Tenderness to touch at the lateral knee
- Increased pain when descending stairs or running downhill
- Occasional swelling near the lateral femoral epicondyle
- Pain that may radiate along the outer thigh
Diagnosis
ITBS is primarily diagnosed through a thorough clinical examination and patient history. Common diagnostic approaches include:
- Noble compression test: Localized pain when pressure is applied at the lateral epicondyle with the knee at 30 degrees of flexion
- Ober test: Assessment of iliotibial band tightness and hip abductor flexibility
- MRI (Magnetic Resonance Imaging): Used to rule out other causes such as meniscal tears or patellofemoral problems
- Ultrasound: To detect fluid accumulation or signs of local inflammation
Treatment
Conservative Treatment
The vast majority of ITBS cases respond well to conservative management. Treatment strategies include:
- Activity modification: Temporary reduction or cessation of running
- Ice therapy: Application of ice to the affected area to reduce inflammation
- Physiotherapy: Stretching of the iliotibial band and strengthening of the hip and gluteal muscles
- Foam rolling / myofascial release: Self-massage techniques to improve tissue mobility and blood flow
- Anti-inflammatory medications: Non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen for short-term pain relief
- Running gait analysis and footwear correction: Optimizing biomechanics through orthotics or shoe adjustments
- Corticosteroid injections: For persistent inflammation as a bridging measure
Surgical Treatment
Surgery is rarely required for ITBS. In cases of chronic symptoms unresponsive to conservative care, an arthroscopic or open iliotibial band release procedure may be considered as a last resort.
Prevention
The following measures can help prevent the development of ITBS:
- Gradual increases in training load (following the 10-percent rule)
- Regular stretching and strength training for the hip and gluteal muscles
- Appropriate footwear and orthotic insoles where indicated
- Cross-training to reduce repetitive strain
- Adequate rest and recovery between training sessions
References
- Fredericson M, Wolf C. Iliotibial band syndrome in runners: innovations in treatment. Sports Medicine. 2005;35(5):451-459.
- van der Worp MP et al. Iliotibial band syndrome: a systematic review. Sports Medicine. 2012;42(11):969-992.
- Strauss EJ et al. Iliotibial band syndrome: evaluation and management. Journal of the American Academy of Orthopaedic Surgeons. 2011;19(12):728-736.