IT Band: Why Foam Rolling Isn’t the Answer

Pain on the outside of your knee, particularly with running and squatting, is a common injury. If you’ve had this, someone has probably told you, “It’s your IT band, just roll it out.” 

You may have tried this, and it either hurt like crazy or didn’t actually fix anything. Let’s break down what the research actually tells us about what the IT band actually is and how to fix it. 

First: What is the IT Band?

The iliotibial (IT) band is a thick band of connective tissue that runs from the hip to the proximal lateral tibia (Gerdy’s Tubercle). It originates from two muscle bellies: the gluteus maximus and the tensor fasciae latae (TFL). 

Functionally, the IT band aids with lateral hip stability, knee stability during stance, and contributes to force transmission. 

An important note to make is that the IT band is NOT a contractile muscle; it’s dense connective tissue. Yes, you heard me. The IT band is not a muscle! Research shows the IT band is extremely stiff, and no amount of manual therapy or foam rolling can generate enough force to cause meaningful change to it.

The Research Has Shifted

IT Band Syndrome (ITB Syndrome) was once described as a “friction problem,” with the band rubbing back and forth over the lateral femoral epicondyle. Due to more research, we now know this is likely not the case.

The current evidence is consistent with ITB Syndrome being a compression problem:

• At 20-30 degrees of knee flexion (the common stance in running), the IT band compresses highly innervated connective tissue near the lateral femoral epicondyle 

• Repetitive loading here increases the compressive stress

• When tissue capacity is exceeded, pain pops up.

This shifts the conversation from “the IT Band is tight” to “the tissue is overloaded under compression.” 

Does Foam Rolling Change IT Band “Stiffness”?

What foam rolling does:

• Short-term increase in perceived flexibility

• Creates a temporary analgesic effect

• Small, temporary change in range of motion

What foam rolling does NOT do:

• Structural change to the dense fascia

• Long-term change in tissue stiffness or range of motion

• Fix load-related overuse injuries 

If you’ve tried foam rolling and the pain returns as soon as you resume normal training, it’s more likely to be a load problem.

Running Loads = Driver of IT Band Pain

Running places a significant force on the lateral knee:

• Peak IT band compression occurs at 20-30 degrees of knee flexion (stance)

• Downhill running increases the knee flexion angle and eccentric quad demand (this is why downhill running is often more painful)

• Repetitive stance phase loading increases cumulative compression

Now, this doesn’t mean don’t run! Running is an incredible sport, and it’s okay to run high weekly mileage. However, this particular pain pops up when:

• Mileage spikes too quickly

• Downhill volume increases

• Strength capacity drops below demand, and the tissue tolerance is exceeded.

This pain does not pop up because your IT Band suddenly became “tight.” It occurs when you ask your tissue to perform a task that it does not have the capacity to do so. 

Conclusion

Foam rolling your IT Band seems logical, I get it. Unfortunately, it’s not a long-term solution to the problem. The long-term solution is not to overload the tissue. It’s to manage training variables, build lateral hip and knee strength and control, and progressively work back to high mileage.

If you’re gearing up for one of the hilly fall races in the Triangle: Bull City Race Fest or City of Oaks, the last thing you need is IT Band pain flaring up every time the course goes downhill. Foam rolling will not build the load tolerance you need for these races.

The right plan will.