Leg Anterior Compartment Muscles

Question 1

tibialis anterior attachments

Answer 1

from the lateral condyle and proximal 2/3rds of the tibia’s lateral surface & crural interosseous membrane to the medial cuneiform & adjacent 1st metatarsal

Question 2

tibialis anterior actions

Answer 2

dorsiflexes ankle, inverts foot

Question 3

tibialis anterior innervation

Answer 3

deep fibular nerve (L4-5-S1)

Question 4

Extensor hallucis longus attachments

Answer 4

• from the middle 1/2 of the fibular surface & crural interosseous membrane to the base of the distal phalanx of the 1st toe

(CROSSES FROM LATERAL TO MEDIAL)

Question 5

extensor hallucis longus actions

Answer 5

dorsiflexes ankle, and extends great toe (MP & IP)

Question 6

extensor hallucis longus innervation

Answer 6

deep fibular nerve (L4-5-S1)

Question 7

extensor digitorum longus attachments

Answer 7

from the lateral tibial condyle, proximal 3/4th of the fibula and crural interosseous membrane to the dorsal digital expansions of toes 2-5

Question 8

extensor digitorum longus actions

Answer 8

dorsiflexes ankle, and extends digits 2-5 (IP & MP)

Question 9

extensor digitorum longus innervation

Answer 9

deep fibular nerve (L4-5-S1)

Question 10

fibularis tertius attachments

Answer 10

from the distal fibula and crural interosseous membrane to the base of the 5th metatarsal

Question 11

fibularis tertius actions

Answer 11

dorsiflexes ankle, and everts foot

Question 12

fibularis tertius innervation:

Answer 12

deep fibular nerve (L4-L5-S1)