Hip: Anatomy 3

Question 1

glute max: primary actions

Answer 1

hip extension

ER

Question 2

glute max: in addition to ext/ER, the superior fibers also (action)

Answer 2

abduct

Question 3

glute max: in addition to ext/ER, the inferior fibers also (action)

Answer 3

adduct

Question 4

glute max: 80% of the muscle attaches to (structure)

Answer 4

ITB

Question 5

glute max: When weak, may contribute to abnormal hip mechanics and

Answer 5

hamstring dominance

Question 6

glute max: innervated by

Answer 6

L5-S2

inferior gluteal nerve

Question 7

glute med: actions of posterior fibers

Answer 7

• extend
• abduct
• ER

Question 8

glute med: actions of anterior fibers AND glute min

Answer 8

• flex
• abduct
• IR

Question 9

gluteals: this mm is often weak and a good place to focus strength training in knee, hip, and lumbar pain

Answer 9

glute med

Question 10

During stance, (muscles) stabilize the pelvis in the frontal/transverse plane

Answer 10

• posterior fibers glute med

- glute min

Question 11

glute med/min: innervated by

Answer 11

L4-S1

superior gluteal nerve

Question 12

piriformis: actions change past (position)

Answer 12

90˚ flexion

Question 13

piriformis actions: when hip is in < 90˚ flexion

Answer 13

• ER
• extension
• abduction

Question 14

piriformis actions: when hip is in > 90˚ flexion

Answer 14

• IR

- adduction

Question 15

piriformis: innervated by

Answer 15

L5-S2

piriformis nerve

Question 16

piriformis: occasionally pierced by

Answer 16

sciatic nerve

Question 17

short external rotators of the hip: what are they?

Answer 17

• obturator internus/externus
• superior/inferior gemelli
• quadratus femoris

Question 18

short rotators of the hip: functions

Answer 18

• hip intrinsic control

- pelvic stability

Question 19

short rotators of the hip: innervated by

Answer 19

L3-S1

Question 20

hamstrings: medial portion consists of

Answer 20

semimembranosus

semitendinosus

Question 21

hamstrings: lateral portion consists of

Answer 21

biceps femoris (short and long heads)

Question 22

hamstrings: actions of medial portion at the hip

Answer 22

extension

IR

Question 23

hamstrings: actions of medial portion at the knee

Answer 23

flexion

IR

Question 24

hamstrings: actions of lateral portion at the hip

Answer 24

hip extension

ER

Question 25

hamstrings: actions of lateral portion at the knee

Answer 25

knee flexion | ER

Question 26

hamstrings: innervated by

Answer 26

L5-S2 | tibial nerve

Question 27

adductors: consist of

Answer 27

- pectineus - gracilis - adductor longus/brevis - adductor magnus

Question 28

adductors: pectineus actions

Answer 28

hip flexion adduction IR

Question 29

adductors: gracilis actions

Answer 29

hip adduction | knee flexion/IR

Question 30

adductors: adductor longus/brevis actions

Answer 30

hip adduction | hip flexion

Question 31

adductors: adductor magnus anterior fibers actions

Answer 31

hip adduction | hip flexion

Question 32

adductors: adductor magnus posterior fibers actions

Answer 32

hip adduction | hip extension

Question 33

This adductor muscle is a prime hip extensor in deep hip/knee flexion

Answer 33

adductor magnus

Question 34

adductors: innervated by

Answer 34

L2-4