LE Muscle Action

Question 0

Tensor fascia latae

Answer 0

Abduct thigh (weak)
Flex leg (weak)
Laterally rotates flexed leg (weak)
Stabilize torso on hip joint (weak)

Question 1

Gluteus Maximus

Answer 1

Laterally rotate thigh
Extend thigh
Abduct thigh
Stabilize torso

Question 2

Gluteus medius

Answer 2

Abduct extended thigh
Stabilize torso
Medially rotates flexed thigh

Question 3

Piriformis

Answer 3

Laterally rotate thigh

Abduct flexed leg

Question 4

Obturator internus

Answer 4

Abduct thigh

Laterally rotate thigh

Question 5

Superior gemellus

Answer 5

Assist with lateral rotation of thigh

Question 6

Inferior gemellus

Answer 6

Assist in lateral rotation of thigh

Question 7

Obturator externus

Answer 7

Laterally rotate thigh at hip

Question 8

Quadratus femoris

Answer 8

Literally rotate thigh

Question 9

Iliopsoas

Answer 9

Flex thigh at hip

Question 10

Iliacus

Answer 10

Flex thigh at hip

Question 11

Psoas major

Answer 11

Flex trunk

Literally flex trunk

Question 12

Pectineus

Answer 12

Flex hip

Adduct hip

Question 13

Sartorius

Answer 13

Flex hip (weak)
Abduct hip (weak)
Laterally rotate hip (weak)
Flex knee (weak)
Medially rotate knee (weak)
Stabilize hip joint and lower limb

Question 14

Rectus femoris

Answer 14

Flex thigh at hip

Extend leg at knee

Question 15

Vastus medialis

Answer 15

Extend leg at knee

Question 16

Vastus medialis

Answer 16

Extend leg at hip

Question 17

Vastus lateralis

Answer 17

Extend leg at knee

Question 18

Articularis genu

Answer 18

Aids knee extension by elevating synovial capsule

Question 19

Pectineus

Answer 19

Flex hip

Adduct hip

Question 20

Gracilis

Answer 20

Adduct thigh
Flex thigh at hip
Flex knee
Medially rotate knee

Question 21

Adductor longus

Answer 21

Adduct thigh at hip
Flex thigh at hip
Hip rotation (controversial)

Question 22

Adductor brevis

Answer 22

Adduct hip
Flex thigh at hip
Hip rotation (controversial)

Question 23

Adductor Magnus medial head

Answer 23

Adduct thigh at hip

Flex thigh at hip

Question 24

Adductor Magnus lateral head

Answer 24

Adduct hip | Extend hip

Question 25

Obturator externus

Answer 25

Laterally rotate thigh

Question 26

Adductor Magnus medial head

Answer 26

Adduct hip | Flex hip

Question 27

Adductor Magnus lateral head

Answer 27

Adducts hip | Extend hip

Question 28

Biceps femoris long head

Answer 28

Extend hip Flex knee Laterally rotate flexed leg

Question 29

Biceps femoris short head

Answer 29

Flex knee | Laterally rotate flexed leg

Question 30

Semimembranosus

Answer 30

Extend hip Flex knee Medially rotate flexed knee

Question 31

Semitendinosus

Answer 31

Extend hip Flex knee Medially rotate flexed knee Stabilize hip

Question 32

Plantaris

Answer 32

``` Plantarflexion Flex knee (weak) ```

Question 33

Gastrocnemius

Answer 33

Plantarflexion | Flex knee

Question 34

Soleus

Answer 34

Plantarflexion

Question 35

Popliteus

Answer 35

Medial rotation of tibia (unlocks knee)

Question 36

Tibialis posterior

Answer 36

Inversion | Plantarflexion

Question 37

Flexor digitorum longus

Answer 37

Flex toes 2-5 Plantarflexion Inversion (weak)

Question 38

Flexor hallucis longus

Answer 38

Flex big toe | Plantarflexion

Question 39

Tibialis anterior

Answer 39

Invert foot | Dorsiflexion

Question 40

Extensor digitorum longus

Answer 40

Extend toes | Dorsiflexion

Question 41

Fibularis tertius

Answer 41

Eversion (weak) | Dorsiflexion

Question 42

Extensor hallucis longus

Answer 42

Extend big toe | Dorsiflexion

Question 43

Fibularis longus

Answer 43

Evert foot Plantarflexion (weak) Support transverse arch

Question 44

Fibularis brevis

Answer 44

Eversion | Plantarflexion (weak)

Question 45

Extensor digitorum brevis

Answer 45

Extend toes

Question 46

Extensor hallucis brevis

Answer 46

Extend hallux

Question 47

Abductor hallucis

Answer 47

Flex hallux Support medial longitudinal arch Abduct hallux?

Question 48

Flexor digitorum brevis

Answer 48

Flex toes 2-5 Metatarsalphalangeal joints Proximal interphalangeal joints

Question 49

Abductor digiti quinti

Answer 49

Flex little toe Abduct little toe Support lateral longitudinal arch

Question 50

Flexor digitorum accessorius

Answer 50

Aids in flexion of toes 2-5

Question 51

Lumbercals

Answer 51

Aids in flexion of toes at metatarsalphalageal joints | Aids in extension at interphalangeal joints

Question 52

Flexor hallucis brevis

Answer 52

Flex hallux

Question 53

Adductor hallucis oblique head

Answer 53

Flex hallux | Adduct hallux?

Question 54

Adductor hallucis transverse head

Answer 54

Adduct hallux? | Support transverse arch

Question 55

Flexor digiti quinti

Answer 55

Flex little toe

Question 56

Plantar interossei

Answer 56

Aduict toes? | Support transverse arch

Question 57

Interossei dorsalis pedis

Answer 57

Abduct toes? | Support transverse arch