Iliotibial band friction syndrome (ITBS) is the most common cause of lateral knee pain among runners. It occurs from repetitive friction of the iliotibial band rubbing against the outside of the knee. The iliotibial band is a sheath of connective tissue that runs down your thigh from your hip to just below your knee.
Causes:
- Excessive or abrupt increases in running mileage
- Preexisting iliotibial band tightness
- Too much downhill running
- Too much unidirectional running around a track
- Too much running on cambered roads, which causes overpronation
- Stiff shoes that limit pronation
- High-arched feet that don't adequately pronate, which transfers the shock of landing to other parts of the leg
- Hip and gluteal muscle weakness
- Running mechanics, specifically changes in knee flexion at heel-strike and internal rotation of the leg
Symptoms: A sensation of tightness on the outside of your knee that progresses into a localized pain or burning sensation, especially when you bend your knee, run downhill, or walk down stairs. Pressing on the outside of the knee while flexing the knee usually reproduces the pain. Some runners experience a clicking sensation that results from the iliotibial band tightening and snapping across the joint when their knees flex and extend.
Treatment:
1) Stretch the IT band.
2) Ice three to four times per day.
3) Rest until pain subsides.
4) Foam roll your IT band.
5) Strengthen hips and glutes.
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