Muscles of leg and dorsum of the foot

Question 1

Anterior Crural Compartment

Answer 1

1. tibialis anterior
2. extensor digitorum longus
3. fibularis tertius
4. extensor hallucis longus
5. extensor digitorum brevis

Question 2

lateral crural compartment

Answer 2

1. fibularis longus

2. fibularis brevis

Question 3

posterior crural compartment

Answer 3

Superficial
1. gastrocnemius
2. soleus
3. plantaris
Deep
4. popliteus
5. flexor digitorum longus
6. flexor hallucis longus
7. tibialis posterior

Question 4

tibialis anterior

Answer 4

O- lateral surface of tibia and interosseous membrane
I- medial cuneiform and base of first metatarsal
A- dorsiflexes and inverts foot
N- deep fibular nerve

Question 5

extensor digitorum longus

Answer 5

O- anterior surface of fibular and interosseous membrane
I- middle and distal phalanges of 4 lesser toes (2-5)
A- extends toe and dorsiflexes foot
N- deep fibular nerve

Question 6

fibularis tertius

Answer 6

O- distal anterior surface of fibula
I- base of 5th metatarsal
A- aids in eversion and dorsiflexion
N- deep fibular nerve

Question 7

Extensor hallucis longus

Answer 7

O- mid portion of fibula, deep to tibialis anterior and extensor digitorum longus
I- base of distal phalanx of great toe
A- extends great toe and dorsiflexes foot
N- deep fibular nerve

Question 8

extensor digitorum brevis

Answer 8

O- dorsal surface of calcaneus
I- base of proximal phalanx of great toe and proximal phalanx of toes 2, 3, 4
A- extends toes 1, 2, 3, 4
N- deep fibular nerve

Question 9

fibularis longus

Answer 9

O- upper lateral 2/3 fibula
I- 1st metatarsal and medial cuneiform
A- everts and plantar flexes foot
N- superficial fibular nerve

Question 10

Fibularis brevis

Answer 10

O- distal lateral fibula
I- base of 5th metatarsal
A- everts and planat flexes foot
N- superficial fibular nerve

Question 11

Gastrocnemius

Answer 11

O- lateral and medial femoral condyles
I- calcaneus
A- plantar flexes foot and flexes leg
N- tibial nerve

Question 12

soleus

Answer 12

O- posterior surface of head and proximal shaft of fibula, soleal line
I- calcaneus
A- plantar flexes foot
N- tibial nerve

Question 13

Plantaris

Answer 13

O- posterior surface of lateral femoral condyle
I- calcaneus
A- weakly plantar flexes foot and flexes leg
N- tibial nerve

Question 14

popliteus

Answer 14

O- lateral condyle of femur
I- proximal tibia above soleal line
A- flexes and medially rotates leg; laterally rotates femur to unlock knee joint when foot is flexed as leg flexion proceeds
N- tibial nerve

Question 15

flexor digitorum longus

Answer 15

O- posterior surface, mid portion of tibia
I- base of distal phalanx of four small toes
A- flexes four small toes, plantar flexes foot
N- tibial nerve

Question 16

Flexor hallucis longus

Answer 16

O- distal 2/3 posterior surface of fibula and adjacent interosseous membrane
I- base of distal phalanx of great toes
A- flexes great toes, plantar flexes foot
N- tibial nerve

Question 17

Tibialis Posterior

Answer 17

O- posterior surface of upper portion of tibia, fibula and interosseous membrane
I- plantar surface metatarsals 2, 3, 4, navicular, medial cuneiform
A- inverts and plantar flexes foot
N- tibial nerve

Question 18

passage of tendons into foot

Answer 18

-Passage into foot:
TDH 
-Order muscles bellies:
DTH
tibialis posterior
flexor hallucis longus
flexor digitorum longus