Pelvis

Question 1

What is the nerve supply gluteus maximus?

What is the action of gluteus maximus?

What is the nerve supply of tensor fascia lata/

Answer 1

Inferior gluteal nerve L5-S2

Extension of hip, lateral rotation of the hip

Superior gluteal nerve

Question 2

What is the origin and insertion of gluteus maximus?

Answer 2

Origin
-Gluteal surface ilium, sacrum and coccyx

Insertion:
-iliotibial tract, gluteal tuberosity of femur

Question 3

What is origin and insertion of gluteus medius?

Where does gluteus minimus insert?

Answer 3

Origin: gluteal surface of ilium
Insertion: lateral GT

Anterior GT

Question 4

What is the function of the gluteal muscles?

Answer 4

Gluteus medius and minimus
–> Abduction
–> internal rotation
–> Stabilises unsupported side of pelvis to prevent it tilting during walking

Gluteus maximus
–> Hip extension
–> External rotation
–> supports extended knee via iliotibial tract e.g. standing from sitting, walking up stairs

Question 5

What clinical sign is evident with weakness of gluteus medius and how would you test it?

Damage to what nerve produces trendelenburg gait?

Answer 5

Trendelenburg gait/positive trendelenburg test

Superior gluteal nervee

Question 6