Hip Region (1) Muscles

Question 1

Psoas Major Attachment

Answer 1

Attachment:

T12- L5 (lateral aspect), L1-L5 (transverse process) and intervertebral discs

Question 2

Psoas Major Action

Answer 2

Action: Hip Flexion

Question 3

Psoas Major Innervation

Answer 3

Innervation: Ventral Rami (L1-L3)

Question 4

Illiacus Attachment

Answer 4

Attachment:

Illiac crest, illiac fossa, sacrum, anterior sacroiliac ligament.

Question 5

Illiacus Action

Answer 5

Action: Hip flexion and stabilization of hip joint.

Question 6

Illiacus Innervation

Answer 6

Innervation: femoral nerve (L2-L3)

Question 7

Psoas Minor Attachment

Answer 7

Attachment:

Lateral aspect bodies of T12- L1, inter vertebral disc, pectin and illiopubic eminence

Question 8

Psoas Minor Action

Answer 8

Action: Stabilization of thigh

Question 9

Psoas Minor Innervation

Answer 9

Innervation: Ventral Rami (L1-L2)

Question 10

Gluetus Maximus Attachment

Answer 10

Attachment:

Posterior ilium, dorsal surface of sacrum + coccyx, sacrotuberous ligament, glueteal tuberosity and illiotibial tract.

Question 11

Gluetus Maximus Action

Answer 11

Action: extension and lateral rotation of thigh at hips.

Question 12

Gluetus Maximus Innervation

Answer 12

Innervation: Inferior Gluteal Nerve

Question 13

Gluteus Medius Attachement

Answer 13

Attachment:

Anterior and Posterior gluteal lines, and lateral surface of trochanter.

Question 14

Gluteus Medius Action

Answer 14

Action:

Abduct and medially rotate thigh.

Question 15

Gluteus Medius Innervation

Answer 15

Innervation:

Superior gluteal nerve (L5, S1)

Question 16

Tensor Fascia Lata Attachment

Answer 16

Attachment:
ASIS, anterior illiac crest and lateral tibia condyle.
Action: Flexes thigh, abducts and medially rotates thigh
Innervation:
Superior gluteal nerve (L5, S1)

Question 17

Tensor Fascia Lata Action

Answer 17

Action: Flexes thigh, abducts and medially rotates thigh

Question 18

Tensor Fascia Lata Innervation

Answer 18

Innervation:

Superior gluteal nerve (L5, S1)

Question 19

Piriformis Attachment

Answer 19

Attachment:

Sacral surface and sacrotuberous ligament and superior boarder of greater trochanter.

Question 20

Piriformis Action

Answer 20

Action: Lateral Rotator

Question 21

Piriformis Innervation

Answer 21

Innervation: Nerve to Obturator Internus (L5 and S1)

Question 22

Obturator Internus Attachment

Answer 22

Attachment:

Obturator foramen and greater trochanter

Question 23

Obturator Internus Action

Answer 23

Action: Maintains apposition, laterally rorares extended femur, abducts flexed femur.

Question 24

Obturator Internus Innervation

Answer 24

Innervation:

Nerve to obturator internus (L5 and S1)

Question 25

Obturator Externus Attachment

Answer 25

Attachment: | Obturator foramen to trochanteric fossa

Question 26

Obturator Externus Action

Answer 26

Action: Lateral Rotator + maintains apposition.

Question 27

Obturator Externus Innervation

Answer 27

Innervation: Obturator Nerve (L3, L4)

Question 28

Gamellus (superior and inferior) Attachment

Answer 28

Attachment: Superior = ischial spine to medial surface of greater trochanter. Inferior = ischial tuberosity to medial surface of greater trochanter.

Question 29

Gamellus (superior and inferior) Action

Answer 29

Action: Lateral rotator. abducts femur and maintains apposition.

Question 30

Gamellus (superior and inferior) Innervation

Answer 30

Innervation: Superior = obturator internus (L5 + S1) | Inferior = quadratus femoris (L5, S1)

Question 31

Quadratus Femoris Attachment

Answer 31

Attachment: ischial tuberosity and quadrate tubercle

Question 32

Quadratus Femoris Action

Answer 32

Action: Maintains apposition and laterally rotates thighe

Question 33

Quadratus Femoris Innervation

Answer 33

Innervation: nerve to quadratus femoris

Question 34

Gluteus Minimus Attachment

Answer 34

external iliac surface between anterior and inferior gluteal lines >>> anterior aspect of greater trochanter

Question 35

Gluteus Minimus Action

Answer 35

> abducts and medially rotates thigh > maintain stability of pelvis during gait

Question 36

Gluteus Minimus Innervation

Answer 36

superior gluteal nerve (L5, S1)