Lower limb 3

Question 1

Anterior leg is divided into 3 compartments

• anterior
• lateral
• posterior

What is the action of each compartment

Answer 1

Anterior - extend/dorsiflex
Lateral - evert
Posterior - plantarflex

Question 2

List the muscles of the anterior leg

Answer 2

Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Fibularis tertius

Question 3

Innervation of the anterior compartment of leg

Answer 3

Deep fibular nerve (deep branch of common fibular nerve)

Question 4

What terminal branch of popliteal artery supplies the anterior leg

Answer 4

Anterior tibial artery

Question 5

What does the anterior tibial artery continue as on the dorsum

Answer 5

Dorsalis pedis

Question 6

Lateral compartment of leg contains what 2 muscles

Answer 6

Fibularis longus and brevis

Question 7

Actions of the fibularis longus and brevis

Answer 7

Eversion

WEAK plantarflexion

Question 8

Innervation of lateral compartment of leg (fibularis longus and brevis)

Answer 8

Superficial fibular nerve

Question 9

Which compartments of the leg are affected by injury to the common fibular nerve

This would result in the foot being in what permanent position

Answer 9

Anterior + lateral

Permanent plantarflexion - foot drop

Question 10

Name 2 muscles on the dorsum of the foot

Answer 10

Extensor hallucis brevis

Extensor digitorum brevis

Question 11

Ankle joint is what type of joint

Answer 11

Synovial hinge

Question 12

Ankle joint is an articulation between what bones

Answer 12

Distal tibia & fibula to superior part of talus

Question 13

The bony arch formed by the articular surface of the tibia with the 2 malleoli is called the

Answer 13

malleolar mortise - a deep socket that articulates with the pulley shaped trochlea of the talus

Question 14

The malleolar grip on the talus bone is strongest and weakest during what movements

Answer 14

Strongest during dorsiflexion

Weakest during plantarflexion

Question 15

Which ligament of the ankle joint is the weakest - medial or lateral

Answer 15

Lateral ligament

Question 16

Which ankle ligament is also called the deltoid ligament

Answer 16

Medial ligament of the ankle

Question 17

Ankle region actually consists of 3 joints - name them

Answer 17

Ankle joint proper (talocrural joint)
Subtalar joint
Inferior tibiofibular joint

Question 18

The classic ankle sprain involves which ligament, which is also the most commonly injured ligament during what movement of the ankle

Answer 18

Anterior talofibular (part of the LATERAL LIGAMENT)

Inversion

Question 19

Muscles that dorsiflex the ankle

Answer 19

Anterior compartment of leg - see other flashcard

Question 20

Muscles that plantarflex the ankle

Answer 20

Posterior compartment of leg (7) - see lower limb 4

Lateral compartment of leg (but only WEAKLY ASSIST IN PLANTARFLEXION) - see other flashcard

Question 21

Superior/proximal tibio-fibular is what type of joint

Answer 21

Synovial plane

Question 22

Inferior/distal tibio-fibular joint is what type of joint

Answer 22

Fibrous