Muscles of the hip joint

Question 1

Which muscles are involved in flexion of the hip?

Answer 1

Iliacus
Psoas major and minor
Rectus femoris
Sartorius

Question 2

What is the origin and insertion of the iliacus?

Answer 2

O - Inner surface of the ilium

I - Lesser trochanter of the femur and shaft just below

Question 3

What are the origins and insertions for the psoas major and minor?

Answer 3

O - L1-L5, T12 and base of sacrum

I - Femur and pectineal line of pubis

Question 4

What are the origins and insertions for the rectus femoris?

Answer 4

O - Anterior inferior iliac spine of the ilium and groove (posterior) above the acetabulum
I - Superior aspect of the patella and patella tendon ti the tibial tuberosity

Question 5

What are the origins and insertions for the sartorius?

Answer 5

O - anterior superior iliac spine and notch just above the spine
I - Anterior medial surface of the tibia just below the condyle

Question 6

Which muscles are involved in extension of the hip?

Answer 6

Semitendinosus
Semimembranosus
Bicep femoris
Gluteus maximus

Question 7

Origin and insertion of semitendinosus

Answer 7

O - Ischial tuberosity

I - Upper anterior medial surface of the tibia just below the condyle

Question 8

Origins and insertions of semimembranosus

Answer 8

O - Ischial tuberosity

I - Posteromedial surface of the medial tibial condyle

Question 9

Origins and insertions of bicep femoris

Answer 9

O - Long head: Ischial tuberosity
Short head: lower half of the linea aspera and lateral condyloid ridge

I - Head of the fibula and lateral condyle of tibia

Question 10

Origins and insertions of gluteus maximus

Answer 10

O - Posterior 1/4 of the crest of ilium, posterior surface of sacrum and coccyx near the ilium, and fascia of the lumber area

I - Oblique ridge on the lateral surface of the greater trochanter and the iliotibial band of the fasciae latae

Question 11

What muscles are involved in abduction of the hip?

Answer 11

Gluteus medius
Gluteus minimus
Tensor fasciae latae

Question 12

Origins and insertions of gluteus medius

Answer 12

O - Lateral surface of the ilium just below the crest

I - Posterior and middle surfaces of the greater trochanter of the femur

Question 13

Origins and insertions of gluteus minimus

Answer 13

O - Lateral surface of the ilium just below the origin of the gluteus medius

I - Anterior surface of the greater trochanter

Question 14

Origin and insertion of the tensor fasciae latae

Answer 14

O - Anterior iliac crest and surface of the ilium and just below the crest
I - 1/4 of the way down the thigh into the iliotibial tract

Question 15

What muscles are involved in adduction of the hip?

Answer 15

Adductor longus 
Adductor magnus 
Adductor brevis 
Gracils
Pectineus

Question 16

Origins and insertions of adductor brevis

Answer 16

O - Front of the inferior pubic ramus just below the origin of the adductor longus

I - Lower 2/3 of the pectineal line of the femur and the upper half of the medial lip of the linea aspect

Question 17

Origins and insertions of adductor longus

Answer 17

O - anterior pubis just below the crest

I - Middle 1/3 of the linea aspera

Question 18

Origins and insertions of adductor longus

Answer 18

O - edge of the entire pubic ramus and the ischium and ischial tuberosity

I - Whole length of the linea aspera, medial condyloid ridge and adductor tubercle

Question 19

Origins and insertions for Gracils

Answer 19

O - Anteromedial edge of the descending ramus of the pubis

I - Anterior medial surface of the tibia below the condyle

Question 20

Origins and insertions for pectineus

Answer 20

O - space 1inch wide on the front of the pubis just above the crest

I - Line leading from the lesser trochanter down to the linea aspera

Question 21

What muscles are involved in external rotation of the hip?

Answer 21

Piriformis 
Gemellus superior 
Gemellus inferior 
Obturator internus 
Obturator externus 
Quadratus femoris

Question 22

Origins and insertions of Piriformis

Answer 22

O - anterior sacrum, posterior portions of the ischium and obturator foramen

I - superior and posterior aspect of the greater trochanter

Question 23

Origins and insertions of gemellus superior

Answer 23

O - Ischial spine

I - posterior aspect of the greater trochanter immediately

Question 24

Origins and insertions of gemellus inferior

Answer 24

O - ischial tuberosity

I - Posterior aspect of the greater trochanter with obturator internus

Question 25

Origins and insertions of obturator internus

Answer 25

O - margin of obturator foramen

I - Posterior aspect of the greater trochanter with gemellus superior

Question 26

Origins and insertions of obturator externus

Answer 26

O - Inferior margin of of the obturator foramen

I - Posterior aspect of the greater trochanter immediately below obturator internus

Question 27

Origins and insertions of quadratus femoris

Answer 27

O - ischial tuberosity

I - intertrochanteric ridge of femur

Question 28

Which muscles are involved in internal rotation of the hip?

Answer 28

Gracils
Semitendinosus
Semimembranosus