The |iliotibial tract|, also called the iliotibial band, is a long, wide, band of ~fascia~ that lies over the muscles on the outer surface of the thigh. It begins superiorly at the level of the |greater trochanter| of the |femur| (upper edge of the thigh bone) and ends inferiorly where it inserts in the ~condyle~ of the |tibia|. This band is a thickening of the normal ~fascia~ that surrounds the entire leg. It is thin medially (inner thigh), but is thick laterally (outer thigh). It helps hold the muscle in place and aids in stability of the knee.
