Ankle joint

Question 1

dorsiflexion

Answer 1

ant. Compartment of leg tibialis anterior, extensor hallucis longus, extensor digitorum longus, innervated by deep femoral/peroneal nerve

Question 2

plantarflexion

Answer 2

Superficial group of posterior compartment of leg, soleus, gastrocnemius, plantaris - tibial nerve

Question 3

inversion

Answer 3

tibialis anterior, extensor hallucis longus - deep femoral nerve,
tibias posterior - tibial nerve

Question 4

eversion

Answer 4

fibularis longus, fibula’s brevis - superficial fibular nerve,
fibularis tertius - deep fibular nerve

Question 5

innervation

Answer 5

Deep fibular (peroneal), tibial and sural nerv

Question 6

blood supply

Answer 6

Anterior tibial, posterior tibial and fibular arteries

Question 7

components of deltoid ligament

Answer 7

Anterior Tibiotalar
Posterior Tibiotalar
Tibionavicular
Tibiocalcaneus

Question 8

components of lateral ligament

Answer 8

Calcaneofibular - most likely damaged
Anterior talofibular - most likely damaged
Posterior talofibular

Question 9

articulating surface of ankle joint

Answer 9

Tibiotarsal joint: distal end of tibia, medial malleolus of the tibia, lateral malleolus of fibula, body of talus

Question 10

origin
insertion
innervation 
action and 
blood supply of 
TIBIALIS ANTERIOR

Answer 10

O - lateral surface of tibia and interosseous membrane
I - Medial and inferior surface of medial cuneiform and base of metatarsal I
N - Deep fibular nerve
A - dorsiflexion and inversion
B - anterior tibial artery

Question 11

origin
insertion
innervation 
action and 
blood supply of 
EXTENSOR HALLUCIS LONGUS

Answer 11

O - middle half of medial surface of fibula and interosseous membrane
I - dorsal surface of base of distal phalanx of big toe
N - Deep fibular nerve
A - extension of big toe and dorsiflexion
B - anterior tibial artery

Question 12

origin
insertion
innervation 
action and 
blood supply of 
EXTENSOR DIGITORUM LONGUS

Answer 12

O - proximal 1/2 of medial surface of fibula and lateral tibial condyle
I - to base of distal and middle phalanges 2-5
N - Deep fibular nerve
A - Extension of 4 toes and dorsiflexion
B - anterior tibial artery, fibular artery

Question 13

origin
insertion
innervation 
action and 
blood supply of 
SOLEUS

Answer 13

O - soleal line and medial border of tibia, posterior aspect of fibular head,
I - via calcaneal tendon to posterior surface of calcaneus
N - tibial nerve
A - plantarflexion
B - posterior tibial artery, peroneal artery

Question 14

origin
insertion
innervation 
action and 
blood supply of 
GASTROCNEMIUS

Answer 14

O - Medial head, posterior surface of femur just superior to medial condyle. Lateral head - upper posterolateral surface of lateral femoral condyle
I - via calcaneal tendon to posterior surface of calcaneus
I - tibial nerve
A - plantarflexion and knee flexion
B - medial and lateral sural artery

Question 15

origin
insertion
innervation 
action and 
blood supply of 
PLANTARIS

Answer 15

O - Inferior of lateral supracondylar line of femur and oblique popliteal ligament of knee
I - via calcaneal tendon posterior surface of calcaneus
N - tibial nerve
A - plantarflexion and knee flexion
B - lateral sural artery and superior lateral geniculate artery