AFL4

Question 1

What is muscle 5? What is its actions? What is its innervation?

Answer 1

• Semitendinosus
• Extends the hip and flexes the knee
• Innervated by the tibial nerve

Question 2

The blood supply to the posterior compartment of the thigh is primarily via…?

Answer 2

Perforating vessels from profunda femoris (deep artery of the thigh)

Question 3

What is nerve 8? What will it go on to supply?

Answer 3

Common fibular nerve: anterior compartment of leg (via deep branch), lateral compartment of leg (via superficial branch), extensor digitorum brevis, extensor hallucis brevis

Question 4

Vessels 4 and 5 enter the posterior thigh and popliteal fossa via a hiatus formed by muscle?

Answer 4

Adductor magnus

Question 5

Tendon 4 belongs to which muscle?

Answer 5

Extensor hallucis longus

Question 6

What is the prime action of tibialis posterior?

Answer 6

Plantarflexion of the ankle

Question 7

What is muscle C? What is it innervated by? Where does it insert?

Answer 7

• Soleus
• Innervated by the tibial nerve
• Inserts on the calcaneum
• Important for venous return

Question 8

Identify muscle B.

Answer 8

Extensor hallucis longus

Question 9

What is muscle A? What is it innervated by?

Answer 9

• Tibialis anterior
• Innervated by the deep fibular nerve

Question 10

What is the prime action of muscle D?

Answer 10

Eversion of the foot

Question 11

What innervates muscles C and D?

Answer 11

Superficial fibular nerve

Question 12

What findings would be consistent with a nerve injury associated with this fracture?

Answer 12

• Impaired sensation over the dorsum of the the foot
• Weak dorsiflexion of the ankle
• Weak eversion of the ankle

Question 13

What is the action of A?

Answer 13

Contraction laterally rotates the femur on the tibia

Question 14

How does the posterior tibial artery lie in relation to soleus? What branch does it give rise to? What does it terminate as?

Answer 14

• Lies deep to soleus
• Gives rise to the fibular artery
• Terminates as the medial and lateral plantar arteries

Question 15

What does the fibular artery supply?

Answer 15

The lateral compartment of the leg (fibularis longus and brevis)

Question 16

The anterior and posterior tibial veins of the leg drain into the…?

Answer 16

Popliteal vein

Question 17

The examination shown below tests which pair of spinal nerves?

Answer 17

S1, S2

Question 18

Which muscle flexes joint 3?

Answer 18

Flexor hallucis longus

Question 19

Muscles 2, 3 and 4 comprise which muscle layer of the sole of the foot?

Answer 19

2nd layer

Question 20

The abnormalities in these X-rays are typical of which condition?

Answer 20

Gout

Question 21

Identify muscle 3.

Answer 21

Abductor hallucis

Question 22

What innervates muscle 1?

Answer 22

Deep fibular nerve

Question 23

Which muscle inserts on region 5?

Answer 23

Fibularis brevis

Question 24

Which nerve innervates the skin in the region labelled 1?

Answer 24

Superficial fibular