The short answer
Iliotibial (IT) band syndrome causes pain on the outer knee where the IT band crosses the joint, typically flaring during running or cycling and easing with rest. It is an overuse and load problem, not a structural tear, and nearly always resolves without surgery through load management, hip and gluteal strengthening, gait and training adjustments, and — for stubborn cases — an ultrasound-guided injection.
Medically reviewed by Marc Gruner, DO, MBA, RMSK
Sports medicine physician, Mayo Clinic fellowship. Last reviewed June 2026
Overview
The IT band is a thick band of connective tissue running along the outside of the thigh to the knee. When training load, hip weakness, or running mechanics overwhelm the tissue, it becomes irritated where it crosses the outer knee, producing sharp or burning pain that predictably appears at a certain distance or time into a run or ride.
Because this is a load-and-mechanics problem rather than a tear, Dr. Gruner focuses on relative rest, hip abductor and gluteal strengthening, and adjustments to cadence, footwear, and training volume. A targeted ultrasound-guided cortisone or PRP injection can help resistant cases, but rehabilitation is the durable fix.
Common symptoms
- Sharp or burning pain on the outer knee
- Pain that appears at a predictable point in a run or ride
- Tenderness over the outer knee
- Pain worse going downhill or down stairs
What to expect at your visit
- 1.
A focused conversation
Dr. Gruner reviews your history, prior imaging, and goals — what you want to get back to doing.
- 2.
Point-of-care ultrasound
When useful, a diagnostic musculoskeletal ultrasound evaluates the injury in real time, with no radiation.
- 3.
A clear, individualized plan
You leave understanding the diagnosis, the non-surgical options, and the expected timeline — in plain language.
Frequently asked questions
- Why does my IT band pain keep coming back?
- IT band syndrome recurs when the underlying drivers — hip and gluteal weakness, training errors, or mechanics — aren't addressed. Rest calms a flare, but a progressive strengthening and load-management program is what prevents it from returning.