MSK Workbook Lower Limb 4

Question 1

What muscles form the superior boundaries of popliteal fossa

Answer 1

Medial- semitendinosus, semimebranosus

Lateral- Biceps femoris

Question 2

Which muscle forms the inferior boundary of popliteal fossa

Answer 2

Gastrocnemius

Question 3

Name the contents of the popliteal fossa (6)

Answer 3

Fat
Posterior femoral cutaneous nerve
Small saphenous vein
Obturator nerve
Tibial and common perineal nerves
Popliteal lymph nodes and vessels

Question 4

What nerve innervates gastrocnemius

Answer 4

Branch of the tibial nerve (S1 and S2)

Question 5

What is the function of the plantaris

Answer 5

Weak plantar flex the ankle

Flex the knee joint

Question 6

Which nerve innervates all the muscles of the posterior compartment of the leg

Answer 6

Tibial nerve

Question 7

Which branch of the popliteal artery supplies the posterior compartment of the leg

Answer 7

Posterior tibial artery

Question 8

The deep fascia of the foot is known as

Answer 8

the Plantar fascia

Question 9

What is the function of the talonavicular joint

Answer 9

Allows foot to pivot side to side

Ball and socket

Question 10

What is the function of the talocalcaneal joint

Answer 10

Allows lateral sliding movements

Question 11

What is the common cause of high arches

Answer 11

Congenital abnormalities such as cerebral palsy, causing fixed contractions of the flexor muscles

Question 12

What is the common cause of flat feet

Answer 12

Old age

Question 13

Name the 3 muscles immediately deep to the plantar fascia

Answer 13

Abductor digiti mini
Flexor digitorum brevis
Abductor hallucis

Question 14

What are the 2 terminal branches of the tibial nerve which innervates the intrinsic muscles of the foot

Answer 14

Medial and lateral plantar nerves

Question 15

Which are the 2 terminal branches of the posterior tibial artery

Answer 15

Medial plantar artery and Lateral plantar artery