Posterior Compartment Of Leg

Question 0

Gastrocnemius insertion

Answer 0

Posterior surface of calcaneus via calcaneal tendon

Question 1

Gastrocnemius origin

Answer 1

Lateral head: lateral aspect of lateral condyle of femur

Medial head: popliteal surface of femur, superior to medial condyle

Question 2

Gastrocnemius innervation

Answer 2

Tibial nerve S1,S2

Question 3

Gastrocnemius action

Answer 3

Planar flexes ankle when knee is extended, raises heal during walking and flexes knee joint

Question 4

Soleus origin

Answer 4

Posterior aspect of head of fibula, superior quarter of posterior surface of fibula, soleal line and medial border of tibia

Question 5

Soleus insertion

Answer 5

Posterior surface of calcaneus via calcaneal tendon

Question 6

Soleus Innervation

Answer 6

Tibial nerve S1,S2

Question 7

Soleus action

Answer 7

Plantar flexes ankle, steadies leg on foot

Question 8

Plantaris origin

Answer 8

Inferior end of lateral supra condylar line of femur and oblique popliteal ligament

Question 9

Plantaris insertion

Answer 9

Posterior surface of calcaneus via calcaneal tendon

Question 10

Plantaris innervation

Answer 10

Tibial nerve S1,S2

Question 11

Plantaris action

Answer 11

Weakly assists gastrocnemius in plantar flexing ankle, main function is proprioception

Question 12

Flexor hallucis longus

Answer 12

Inferior two thirds of posterior surface of fibula and inferior part of interosseus membrane

Question 13

Flexor hallucis longus insertion

Answer 13

Base of distal phalanx of great toe

Question 14

Flexor hallucis long us innervation

Answer 14

Tibial nerve S2,S3

Question 15

Action of FHL

Answer 15

Flexes great toe at all joints, weakly plantar flexes ankle and supports medial longitudinal arch of foot

Question 16

Flexor digitorum longus origin

Answer 16

Medial part of posterior surface of tibia inferior to soleal line and by a broad tendon to fibula

Question 17

Insertion flexor dig longus

Answer 17

Bases of distal phalanges of lateral four digits

Question 18

Innervation of flexor dig longus

Answer 18

Tibial nerve S2,S3

Question 19

Action flexor dig longus

Answer 19

Flexes lateral four digits, plantar flexes ankle, supports longitudinal arches of foot

Question 20

Origin of tibialis posterior

Answer 20

Interosseous membrane and posterior surface of tibia inferior to soleal line, posterior surface of fibula

Question 21

Insertion of tibialis posterior

Answer 21

Tuberosiry of navicular, cuneiforms, cuboid and bases of 2nd to 4th metatarsals.

Question 22

Innervation of tibialis posterior

Answer 22

Tibial nerve L4,L5

Question 23

Action of tibialis posterior

Answer 23

Plantar flexes ankle, inverts foot and support medial longitudinal arch of foot