Tensor fasciae latae

Musculus tensor fasciae latae

MuscularSuperficial musclesPelvisLeft and right

View left in 3D View right in 3D

What it is
Short flat muscle enclosed between two layers of the fascia lata, running from the anterior iliac crest and ASIS to the iliotibial tract about a third of the way down the thigh.
Function
Abducts, flexes and medially rotates the hip and tenses the iliotibial band to steady the extended knee.
Size
About 15 cm long, 2-4 cm wide.
Clinical note
Supplied by the superior gluteal nerve; a tight TFL/iliotibial band contributes to lateral hip and knee pain.