Hip

Question 1

Psoas major attachments and actions

Answer 1

Attachments:
lateral aspect bodies of T12-L5, transverse processes of L1-L5 and intervertebral discs
lesser trochanter

Action:
flexion of hip

Question 2

Gluteus minimus attachments and actions

Answer 2

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

Action:
abducts and medially rotates thigh
maintain stability of pelvis during gait

Question 2

Illiacus attachments and actions

Answer 2

Attachments:
iliac crest, iliac fossa, ala of sacrum, anterior sacroiliac ligaments
lesser trochanter

Action:
hip flexion, stabilization of hip joint
iliopsoas is active in quiet standing

Question 2

Psoas minor attachments and actions

Answer 2

Attachments:
lateral aspect bodies of T12-L1 and intervertebral disc
pecten and iliopubic eminence

Action:
stabilization of the thigh at the hip

Question 3

Tensor facia lata attachments and actions

Answer 3

Attachments
ASIS + anterior iliac crest
iliotibial tract (lateral condyle of tibia)

Action
abducts and medially rotates thigh
flexes thigh

Question 3

Gluteus maximus attachments and actions

Answer 3

Attachments:
posterior ilium, dorsal surface sacrum and coccyx, sacrotuberous ligament
gluteal tuberosity and iliotibial tract (lateral condyle of tibia)

Action:
extension and lateral rotation of the thigh at the hip

Question 4

Gluteus medius attachments and actions

Answer 4

Attachments:
external iliac surface between anterior and posterior gluteal lines
lateral surface of greater trochanter

Action:
abduct and medially rotate thigh
maintain stability of pelvis during gait

Question 5

Gemellus superior and inferior attachments and actions

Answer 5

Attachments:
ischial spine (superior) and ischial tuberosity (inferior)
medial surface of greater trochanter

Action:
laterally rotates extended femur
abducts flexed femur
maintains apposition of head of femur and acetabulum

Question 5

Obturator internus attachments and actions

Answer 5

Attachments:
internal surface of obturator foramen & membrane
medial surface of greater trochanter

Action:
laterally rotates extended femur
abducts flexed femur
maintains apposition of head of femur and acetabulum

Question 5

Piriformus attachments and actions

Answer 5

Attachments:
anterior sacral surface and sacrotuberous ligament
superior border of greater trochanter

Action:
laterally rotates extended thigh
abducts flexed thigh
maintains apposition of the femoral head and acetabulum

Question 5

Obturator externus attachments and actions

Answer 5

Attachments:
margins of obturator foramen and membrane
trochanteric fossa

Action:
laterally rotates and adducts thigh
maintains apposition of head of femur and acetabulum

Question 6

Quadratus femoris attachments and actions

Answer 6

Attachments:
margins of obturator foramen and membrane
trochanteric fossa
Action:
laterally rotates and adducts thigh
maintains apposition of head of femur and acetabulum