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Tensor Fasciae Latae
Muscular System

Tensor Fasciae Latae

Tensor fasciae latae

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Quick Facts

Origin: Anterior superior iliac spine and anterior one third of outer lip of iliac crest.

Insertion: Tubercle of iliotibial tract on the tibia, via iliotibial tract.

Action: Assists in medial rotation, abduction, and flexion of thigh at hip joint.

Innervation: Superior gluteal nerve (L4-S1).

Arterial Supply: Ascending branch of lateral circumflex femoral artery and superior gluteal artery.

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Origin

The tensor fasciae latae muscle originates from the:

- anterior superior iliac spine;

- anterior one third of the outer lip of iliac crest;

- adjacent fascia lata.

Insertion

The fibers of the tensor fasciae latae muscle travel inferiorly and insert onto the iliotibial tract, which inserts onto the tubercle of iliotibial tract on the tibia.

Key Features & Anatomical Relations

The tensor fasciae latae muscle is one of the superficial gluteal muscles. It is a long, thin, fusiform type of skeletal muscle.

It is located:

- superficial to the gluteus medius and minimus muscles, and the deep layer of the iliotibial tract;

- deep to superficial layer of the iliotibial tract;

- lateral to the sartorius and rectus femoris muscles.

Actions & Testing

The tensor fasciae latae muscle is involved in multiple actions:

- assists in medial rotation of the thigh at the hip joint;

- assists in abduction of the thigh at the hip joint;

- assists in flexion of the thigh at the hip joint;

- helps stabilize the extended knee joint.

The tensor fasciae latae muscle can be tested by abducting the thigh at the hip joint against resistance while the hip is flexed and the knee joint is extended, during which it can be palpated (Standring, 2016).

References

Standring, S. (2016) Gray's Anatomy: The Anatomical Basis of Clinical Practice. Gray's Anatomy Series 41st edn.: Elsevier Limited.

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Tensor Fascia Lata Muscle

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However, the tensor fasciae latae muscle was damaged, as well as the direct head of the rectus femoris, during the Smith-Peterson approach.

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