The hip abductors

Question 1

What muscles form the hip abductors?

Answer 1

Gluteus medius and minimus
Piriformis
Tensor fascia Latae

Question 2

Muscle attachments, actions and nerve supply of gluteus medius

Answer 2

Originates from outer surface of ilium and inserts into lesser trochanter

It abducts and medially rotates the pelvis (ant fibres)

Superior gluteal nerve L4-L5, S1

Question 3

Muscle attachments action and nerve supply of gluteus minimus

Answer 3

Originates from outer surface of the ilium and inserts into the anterior surface of the greater trochanter

Abducts and medially rotates the pelvis (ant fibres)

Superior gluteal nerve L4-L5, S1

Question 4

Muscle attachments actions and nerve supppy of TFL

Answer 4

Originates from the ASIS and iliac crest and inserts via the iliotibial band and Gerdy’s tubercle lateral aspect proximal tibia

Flexes and medially rotates the thigh

Superior gluteal nerve L4 L5 S1

Question 5

Muscle attachments actions and nerve supply of Piriformis

Answer 5

Originates from internal surface of the sacrum and gluteal surface of ilium and inserts in the greater trochanter

Lateral rotation (deep lateral rotator) and abduction of the flexed hip

1st 2nd sacral nerves