Gluteus Maximus

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Gluteus Maximus     Gluteus MaximusGluteus maximus: Origin and Insertion

Origin: Surface of ilium posterior to posterior gluteal line and posterior inferior surface of sacrum and coccyx.

Insertion:  Gluteal tuberosity of femur; anterior aspect of lateral tibial condyle via the iliotibial tract (iliotibial band).

Actions: Extends, laterally rotates thigh at hip; upper fibres help abduct the thigh.(inferior fibres also stabilise the extended knee by tightening the ITB)

Innervation: Inferior gluteal nerve (L5, S1, S2)

Daily uses: Walking upstairs




Other muscles of the Lower Limb

Gluteus Medius

Origin: Outer surface of ilium between the posterior and anterior gluteal lines.

Insertion: Lateral and superior surfaces of the greater trochanter of the femur.

Actions: Abducts thigh at hip; anterior fibres medially rotate thigh and posterior fibres laterally rotate thigh.

Innervation: Superior gluteal nerve (L5, S1)

Daily uses: Stabilising hip through stance phase

Gluteus Minimus

Origin: Outer(external) surface of ilium between the anterior and inferior gluteal lines.

Insertion: Anterior surface of the greater trochanter of the femur

Actions: Abducts thigh at hip. Anterior fibres medially rotate hip.

Innervation: Superior gluteal nerve (L5, S1)

Daily uses:

Bicep Femoris

Origin: Ischial tuberosity of os coxae

Insertion: Head of fibula and lateral condyle of tibia

Actions: Flexes leg at knee and laterally rotates lef at knee if the knee is flexed (Also extends thigh at hip) .

Innervation: Tibial part of sciatic nerve (S1-3)

Daily uses: Walking up stairs.

More Anatomy

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