Anterior Compartment / Dorsum Foot

Question 1

What is the insertion of the tibialis anterior?

Answer 1

medial cuneiform (medial and plantar surface)
first metatarsal (medial base)

Question 2

What is the insertion of the tibialis anterior?

Answer 2

Deep fibular n. L4,L5

Question 3

What is the action of the tibialis anterior?

Answer 3

Talocrural joint: dorsiflexion

Subtalar Joint: inversion (supination)

Question 4

what is the origin of the extensor hallucis longus?

Answer 4

Fibula (middle third of the medial surface)

interosseous membrane

Question 5

what is the insertion of the extensor hallucis longus?

Answer 5

1st toe (at the dorsal aponeurosis and the base of its distal phalynx)

Question 6

what is the innervation of the extensor hallucis longus?

Answer 6

Deep fibular n. L4-L5

Question 7

what is the action of the extensor hallucis longus?

Answer 7

talocrural joint: dorsiflexion
subtalar joint: active in both eversion and inversion (proation / supination), depending on the initial position of the foot
Extends the MTP and IP joints of the big toe

Question 8

what is the origin of the extensor digitorum longus?

Answer 8

fibula (head and medial surface)
Tibia (lateral condyle)
interosseous membrane

Question 9

What is the insertion of the extensor digitroum longuss?

Answer 9

2-5th toes, (at the dorsal aponeurosis at the bases of the distal phalanges)

Question 10

what is the insertion of the extensor digitorum longus?

Answer 10

deep fibular n. L4-L5

Question 11

what is the action of the extensor digitorum longus?

Answer 11

talocrural joint: dorsiflexion
subtalar joint: eversion (pronation)
extends the MTP and IP joints of the 2nd to the 5th toes

Question 12

what is the origin of the extensor digitorum brevis?

Answer 12

calcaneus (dorsal surface)

Question 13

what is the insertion of the extensor digitorum brevis?

Answer 13

2nd-4th toes (at dorsal aponeuroses and bases of the middle phalanges)

Question 14

what is the innervation of the extensor digitorum brevis?

Answer 14

deep fibular n. L5, S1

Question 15

what is the action of the extensor digitorum brevis?

Answer 15

extension of the MTP and PIP joints of the 2nd to 4th toes

Question 16

what is the origin of the extensor hallucis brevis?

Answer 16

calcaneus ( dorsal surface)

Question 17

what is the insertion of the extensor hallucis brevis?

Answer 17

1st toe (at dorsal aponeurosis and proximal phalanx)

Question 18

what is the innervation of the extensor hallucis brevis?

Answer 18

deep fibular n. (L5, S1)

Question 19

what is the action of the extensor hallucis brevis?

Answer 19

extension of the MTP joints of the 1st toe

Question 20

what is the origin of the fibularis longus?

Answer 20

Fibula (head and proximal 2/3 of the lateral surface, arising partly from the intermuscular septa)

Question 21

what is the insertion of the fibularis longus?

Answer 21

medial cuneiform (plantar side)
1st metatarsal (base)

Question 22

what is the innervation of the fibualris longus?

Answer 22

superficial fibular n. L5, S1

Question 23

what is the action of the fibularis longus?

Answer 23

talocrural joint: plantar flexion
subtalar joint: eversion (pronation)
supports the transverse arch of the foot

Question 24

what is the origin of the fibularis brevis?

Answer 24

fibula (distal half of the lateral surface)

intermuscualr septa

Question 25

what is the insertion of the fibularis brevis?

Answer 25

5th metatarsal (tuberosity at the base, with an ocassional division to the dorsal aponeurosis of the 5th toe)

Question 26

what is the innervation of the fibularis brevis?

Answer 26

superficial fibular n. L5,S1

Question 27

what is the action of the fibularis brevis?

Answer 27

talocrucal joint: plantar flexion | subtalar joint: eversion (pronation)

Question 28

what is the origin of peroneus tertius (aka fibularis tertius)

Answer 28

distal fibula (anterior border)

Question 29

what is the insertion of the pernoues tertius?

Answer 29

5th metatarsal (base)

Question 30

what is the innervation of the peroneus tertius?

Answer 30

deep fibular n. L4,L5

Question 31

what is the action of the fibularis tertius?

Answer 31

talocrural joint: dorsiflexion | subtalar joint: evesion (pronation)

Question 32

What is the origin of the tibialis anterior?

Answer 32

Tibia (upper 2/3 lateral surface) Interosseous membrane Superficial Crural Fascia (highest part)