If you picked up running this spring or ramped up your miles for summer, you may know the feeling. A burning, sharp ache on the outside of your knee. It shows up about a mile in, then fades once you stop. That is IT band syndrome, and it is one of the most common overuse injuries in runners.
What Is the IT Band, and Why Does It Hurt?
The iliotibial band is a thick strip of connective tissue that runs from your hip down to just below your knee. Its job is to help stabilize your leg with every stride. When it gets irritated from repetitive motion, it compresses against the bony knob on the outside of your knee. That compression produces the burning ache you notice mid-run.
IT band syndrome is not a tear or a fracture. It is an overuse injury, which means rest alone will not fix it if the root cause is still there.
What Actually Causes IT Band Syndrome?
The root issue is almost always in your hips, not your knee.
When the muscles on the outside of your hip, called the hip abductors, are weak or fatigued, your leg rotates inward with each stride. That inward shift pulls the IT band tighter and causes it to rub repeatedly against the knee.
A large 2024 study published in Phys Sportsmed analyzed more than 76,000 race entrants and found that newer runners, slower runners, and those with fewer years of experience were most likely to develop IT band problems. This points to running mechanics, not just high mileage, as the main driver.
Running on sloped roads, increasing mileage too quickly, and worn-out shoes all add to the problem. Tight hip flexors from long hours of sitting can also contribute. For more on how hip tightness travels up the kinetic chain, see our post on why sitting all day is hurting your back.
How Is IT Band Syndrome Treated?
The same 2024 systematic review found that conservative treatment reduced pain by 27% to 100%, with functional improvement of 10% to 57% over 2 to 8 weeks. Hip abductor strengthening was the single most consistently effective strategy across all studies reviewed.
Hip abductor exercises like clamshells, side-lying leg raises, and banded lateral walks address the underlying weakness directly. Stretching the hip flexors and calf muscles reduces tension along the chain. Slightly increasing your step rate while running has also shown promise in lowering the compressive load on the knee.
Soft tissue work and manual therapy can help loosen the band and surrounding muscles. When hip joint mobility or pelvic alignment is a contributing factor, chiropractic evaluation can be a useful part of the treatment plan. A similar hip-and-nerve pattern is seen in piriformis syndrome, where addressing both hip mobility and soft tissue tension tends to drive the best outcomes.
How Long Does IT Band Syndrome Take to Heal?
Most runners improve within 4 to 8 weeks with a consistent approach. Trying to push through the pain without addressing the hip weakness almost always stretches recovery out longer.
If outer knee pain has not improved after 2 to 3 weeks of rest and targeted exercises, a proper evaluation is worth pursuing. It may reveal a hip alignment issue, joint restriction, or gait pattern that is keeping the tissue irritated.
The Bottom Line
IT band syndrome is one of the more treatable running injuries. The research consistently points to hip abductor weakness as the central driver, and strengthening those muscles produces real, measurable results. Simple rest and stretching is rarely enough on its own.
A structured approach that includes targeted hip work and, where needed, hands-on care gives runners the best chance of recovering without a relapse. For athletes also dealing with other sport-related overuse injuries this summer, see our post on golf-related back pain, which covers similar themes of hip mechanics and repetitive strain.
Sources & Further Reading
- Engel T, et al. Effects of conservative treatment strategies for iliotibial band syndrome on pain and function in runners: a systematic review. Frontiers in Sports and Active Living. 2024;6:1386456. doi:10.3389/fspor.2024.1386456
- Lopes AD, et al. Risk factors associated with a history of iliotibial band syndrome (hITBS) in distance runners: a cross-sectional study in 76,654 race entrants. Phys Sportsmed. 2024. doi:10.1080/00913847.2024.2341607
- Comparative prevalence and associated risk factors of iliotibial band syndrome among cyclists and runners. Journal of Population Therapeutics and Clinical Pharmacology. 2023;30. Available: https://www.jptcp.com/index.php/jptcp/article/view/3202
