Foot And Lower Leg- Foot Extensors

Question 1

Tibialis anterior (origin)

Answer 1

Upper surface of tibia, lateral to tibial crest

Question 2

Tibialis anterior (insertion)

Answer 2

Forms a strong tendon which inserts into side of medial cuneiform and proximal end of 1st MC

Question 3

Tibialis anterior (action)

Answer 3

Dorsiflexion of ankle and inversion of foot

Question 4

Extensor (abductor) hallucis Longus (origin)

Important for location of St 41, 42 and 43 also Liv 3

Answer 4

Middle section of anterior fibula

Question 5

Extensor (abductor) hallucis Longus (insertion)

Answer 5

Passes lateral to TA tendon and runs to base of 1st distal phalanx

Question 6

Extensor (abductor) hallucis Longus (action)

Answer 6

Extension of big toe

Very important for propulsion in walking and running

Question 7

Extensor digitorum Longus (origin)

Important for location of St41, 42, GB 41

Answer 7

Upper section of anterior fibula

Question 8

Extensor digitorum Longus (insertion)

Important for location of St41, 42, GB 41

Answer 8

Passes lateral to EHL tendon to insert into the middle and distal phalanges of the 2nd to 5th toes

Question 9

Extensor digitorum Longus (action)

Important for location of St41, 42, GB 41

Answer 9

Extension of toes