Tensor Fascia Lata

Original Editor - George Prudden,

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Description

The Tensor fascia latae(TFL) is a fusiform muscle enclosed between two layers of fascia lata  with a length of 15cm approximately and overlying the gluteus minimus and some part of the gluteus medius. It's myotomes is fourth lumbar nerve root (L4)

Anatomy

Origin

TFL originates from anterior superior iliac spine(ASIS) and the anterior part of iliac crest

Insertion

TFL together with the gluteus maximus joins to form the Iliotibial tract, which attaches to lateral condyle of tibia

Nerve supply

The Tensor fasciae latae is innervated by superior gluteal nerve, originating from lumbar nerve 4, 5, and first sacral nerve(L4-S1) roots. It also innervates gluteus minimus and medius muscles before terminating with innervation of tensor fasciae latae muscle

Blood Supply

Blood is supplied to TFL via deep branch of superior gluteal artery

The superior gluteal vien a branch of the internal iliac viens serves as the venous drainage route.

Function

• TFL is prime mover in hip medial rotation and a weak hip abductor
• It serves as an accessory muscle in abduction and flexion of the hip
• Together with gluteus maximus and the illiotibal band, it stabilizes the hip joint by holding the head of the femur in the acetabulum
• The tensor of fasciae latae, together with the gluteus maximus contributes in stability of the knee during extension and also in partial flexion
• As part of the iliotibial tract it aids lateral rotation of the leg.

Resourses

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