Deep Posterior Compartment of Leg

Question 1

What is the origin of popliteus?

Answer 1

Lateral condyle of femur

Question 2

What is the origin of flexor digitorum longus?

Answer 2

Medial posterior tibia

Question 3

What is the origin of flexor hallucis longus?

Answer 3

Posterior surface of fibula and interosseous membrane

Question 4

What is the origin of tibialis posterior?

Answer 4

Posterior surface of Interosseous membrane

Question 5

What is the insertion of popliteus?

Answer 5

Posterior proximal tibia

Question 6

What is the insertion of flexor digitorum longus?

Answer 6

Plantar surface of distal phalanges of lateral 4 toes

Question 7

What is the insertion of flexor hallucis longus?

Answer 7

Plantar surface of distal phalange of great toe

Question 8

What is the insertion of tibialis posterior?

Answer 8

Navicular and medial cuneiform

Question 9

What is the common nerve innervation?

Answer 9

Tibial nerve

Question 10

What nerve roots supply popliteus?

Answer 10

L4, S1

Question 11

What nerve roots supply both the flexor muscles?

Answer 11

S2, S3 (mainly S2)

Question 12

What nerve roots supply tibialis posterior?

Answer 12

L4, L5

Question 13

What is the action of popliteus?

Answer 13

Stabilises knee and unlocks knee to enable flexion.

Question 14

What is the action of flexor digitorum longus?

Answer 14

Flex four lateral toes

Question 15

What is the action of flexor hallucis longus?

Answer 15

Flex great toe

Question 16

What is the action of tibialis posterior?

Answer 16

Plantarflexion of foot and Inversion of Foot