Medical Dictionary

iliotibial band


Medical Definition of iliotibial band

  1. :  a fibrous thickening of the fascia lata that extends from the iliac crest down the lateral part of the thigh to the lateral condyle of the tibia and that provides stability to the knee and assists with flexion and extension of the knee—called also iliotibial tract, IT band

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to cast off or become cast off

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