OIAN of Leg/Ankle/Foot

Question 1

Tibialis Anterior (O:)

Answer 1

proximal lateral tibia
interosseus membrane

Question 2

Tibialis Anterior (I: )

Answer 2

1st cuneiform
1st metatarsal

Question 3

Tibialis Anterior (A: )

Answer 3

dorsiflexion
inversion

Question 4

Tibialis Anterior (N:)

Answer 4

deep fibular nerve (L4-S1)

Question 5

Extensor Hallucis Longus (O:)

Answer 5

proximal anterior fibula
interosseus membrane

Question 6

Extensor Hallucis Longus (I: )

Answer 6

distal phalanx of great toe
(dorsal aspect)

Question 7

Extensor Hallucis Longus (A:)

Answer 7

great toe extension
(assist inversion & dorsiflexion)

Question 8

Extensor Hallucis Longus (N:)

Answer 8

deep fibular nerve (L4-S1)

Question 9

Extensor Digitorum Longus (O:)

Answer 9

proximal anterior fibula
anterior lateral condyle of tibia
interosseus membrane

Question 10

Extensor Digitorum Longus (I: )

Answer 10

distal phalanx of toes 2-5
(dorsal aspect)

Question 11

Extensor Digitorum Longus (A:)

Answer 11

extension of toes 2-5
(assist dorsiflexion)

Question 12

Extensor Digitorum Longus (N:)

Answer 12

deep fibular nerve (L4-S1)

Question 13

Tibialis Posterior (O:)

Answer 13

adjacent tibia/fibula
interosseus membrane

Question 14

Tibialis Posterior (I: )

Answer 14

navicular
most tarsals & metatarsals

Question 15

Tibialis Posterior (A:)

Answer 15

inversion
plantarflexion

Question 16

Tibialis Posterior (N:)

Answer 16

tibial nerve (L5-S1)

Question 17

Flexor Hallucis Longus (O:)

Answer 17

posterior fibula
interosseus membrane

Question 18

Flexor Hallucis Longus (I: )

Answer 18

distal phalanx of great toe
(plantar surface)

Question 19

Flexor Hallucis Longus (A:)

Answer 19

great toe flexion
(assist inversion & plantarflexion)

Question 20

Flexor Hallucis Longus (N:)

Answer 20

tibial nerve (L5-S2)

Question 21

Flexor Digitorum Longus (O:)

Answer 21

posterior tibia

Question 22

Flexor Digitorum Longus (I: )

Answer 22

distal phalanx of toes 2-5
(plantar surface)

Question 23

Flexor Digitorum Longus (A:)

Answer 23

flexion of toes 2-5
(assist inversion & plantarflexion)

Question 24

Flexor Digitorum Longus (N:)

Answer 24

tibial nerve (L5-S1)

Question 25

Fibularis Longus (O:)

Answer 25

fibula head interosseus membrane

Question 26

Fibularis Longus (I: )

Answer 26

medial cuneiform 1st metatarsal (plantar surface)

Question 27

Fibularis Longus (A:)

Answer 27

plantarflexion eversion

Question 28

Fibularis Longus (N:)

Answer 28

superficial fibular nerve (L4-S1)

Question 29

Fibularis Brevis (O:)

Answer 29

middle lateral fibula

Question 30

Fibularis Brevis (I: )

Answer 30

lateral surface of 5th metatarsal base

Question 31

Fibularis Brevis (A:)

Answer 31

eversion (assist plantarflexion)

Question 32

Fibularis Brevis (N:)

Answer 32

superficial fibular nerve (L4-S1)

Question 33

Fibularis Tertius (O:)

Answer 33

distal medial fibula interosseus membrane

Question 34

Fibularis Tertius (I: )

Answer 34

dorsal surface of 5th metatarsal base

Question 35

Fibularis Tertius (A:)

Answer 35

assist ankle eversion & dorsiflexion

Question 36

Fibularis Tertius (N:)

Answer 36

deep fibular nerve (L4-S1) (ant. cross of lat. malleolus)

Question 37

Soleus (O:)

Answer 37

posterior tibia posterior fibula interosseus membrane

Question 38

Soleus (I: )

Answer 38

posterior calcaneus (via Achilles tendon)

Question 39

Soleus (A: )

Answer 39

plantarflexion

Question 40

Soleus (N:)

Answer 40

tibial nerve (S1, S2)

Question 41

Plantaris (O:)

Answer 41

posterior lateral condyle of femur

Question 42

Plantaris (I: )

Answer 42

posterior calcaneus (via Achilles tendon)

Question 43

Plantaris (A:)

Answer 43

knee flexion weak plantarflexion

Question 44

Plantaris (N:)

Answer 44

tibial nerve (S1, S2)