Muscles of the Gluteal Region

Question 1

gluteus maximus attachments

Answer 1

from the aponeurosis of the erector spinae, sacrum, sacrotuberous ligament & posterior gluteal line (innominate) to the greater trochanter, gluteal tuberosity of the femur & the iliotibial tract

Question 2

gluteus maximus actions

Answer 2

extends and laterally rotates the hip

Question 3

gluteus maximus innervation

Answer 3

inferior gluteal nerve (L5-S1-2)

Question 4

gluteus medius attachments

Answer 4

from the external iliac surface to the oblique ridge on the lateral aspect of the greater trochanter; gluteal aponeurosis

Question 5

gluteus medius actions

Answer 5

abducts and medially rotates hip; keeps the pelvis level when the opposite leg is raised

Question 6

gluteus medius innervation

Answer 6

superior gluteal nerve (L4-L5-S1)

Question 7

is the gluteus minimus deep or superficial to the gluteus medius?

Answer 7

deep

Question 8

gluteus minimus attachments

Answer 8

from the external iliac surface and margin of the greater sciatic notch to the anterolateral aspect of the greater trochanter

Question 9

gluteus minimus actions

Answer 9

abducts & medially rotates hip; and keeps the pelvis level when opposite leg is raised

*** same as medius

Question 10

gluteus minimus inn.

Answer 10

superior gluteal nerve (L4-5-S1)

Question 11

What are the 6 lateral rotators of the hip?

Answer 11

1. piriformis
2. gemellus superior
3. gememllus inferior
4. quadratus femoris
5. obturator internus
6. obturator externus (deep to quadratus femoris)

Question 12

piriformis attachments

Answer 12

from the anterolateral sacrum & posterior inferior iliac spine to the upper border of the greater trochanter

Question 13

piriformis actions:

Answer 13

abducts and laterally rotates hip

Question 14

piriformis innervation:

Answer 14

nerve to piriformis (S1-2)

Question 15

superior gemellus attachments

Answer 15

external surface spine of ischium via obturator internus tendon to greater trochanter

Question 16

superior gemellus action:

Answer 16

laterally rotates hip

Question 17

superior gemellus inn.

Answer 17

sacral plexus (L5-S1-2)

Question 18

Inferior gemellus attachments:

Answer 18

proximal ischial tuberosity via obturator internus tendon to greater trochanter

Question 19

inferior gemellus actions:

Answer 19

laterally rotates the hip

Question 20

inferior gemellus innervation:

Answer 20

sacral plexus (L4-5-S1)

Question 21

obturator internus attachments

Answer 21

from the anterolateral wall of the pelvis & obturator membrane to the medial surface of the greater trochanter

Question 22

obturator internus actions:

Answer 22

laterally rotates the hip

Question 23

obturator internus inn.

Answer 23

nerve to the obturator internus (from sacral plexus) (L5-S1-2)

Question 24

quadratus femoris attachments

Answer 24

from the ischial tuberosity to the quadrate tubercle of the femur

Question 25

quadratus femoris actions:

Answer 25

laterally rotates hip

Question 26

quadratus femoris innervation:

Answer 26

nerve to the quadratus femoris (from sacral plexus) (L4-5-S1)