Anterior leg Flashcards Preview

MSK > Anterior leg > Flashcards

Flashcards in Anterior leg Deck (20):
1

Neurovascular supply of anterior leg

Deep fibular nerve (L4-L5)
Anterior tibial artery

2

How can you test the power of tibialis anterior muscle
Why

Ask patient to stand on heels
It's the strongest dorsiflexor of foot

3

Origin of tibialis anterior

Lateral tibia

4

Insertion of tibialis anterior

Medial cuneiform and base of metatarsal 1

5

Action of tibialis anterior

Dorsiflexion and inversion of foot

6

Origin of extensor digitorum longus

Lateral condyle of tibia
Medial surface of fibula

7

Insertion of extensor digitorum longus

Tendon splits into 4 each inserting onto a toe

8

Action of extensor digitorum longus

Extension of lateral 4 toes
Dorsiflexion of foot

9

Origin of extensor hallucis longus

Medial fibular shaft

10

Where does the tendon of extensor hallucis longus cross at ankle

Anterior to ankle joint

11

Insertion of extensor hallucis longus

Base of distal phalanx of big toe

12

Action of extensor hallucis longus

Extension of big toe
Dorsiflexion of foot

13

What can fibularis tertius be considered as being a part of

Extensor digitorum longus

14

Which anterior leg muscle is not present in everyone

Fibularis tertius

15

Origin of fibularis tertius

Medial surface of fibula

16

Insertion of fibularis tertius

Metatarsal 5

17

Action of fibularis tertius

Eversion and dorsiflexion of foot

18

Consequence of damage to common fibular nerve
Why does this occur

Paralysis of anterior leg muscles
Footdrop

Unopposed pull of plantarflexors in posterior leg

19

How does footdrop affect walking

Affected limb can drag along ground
To compensate, the patient can flick affected foot outwards while walking (eversion flick)

20

Muscles of anterior leg

Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Fibularis tertius

Decks in MSK Class (87):