Posterior Leg and Ankle Joint Flashcards Preview

Anatomy 2 > Posterior Leg and Ankle Joint > Flashcards

Flashcards in Posterior Leg and Ankle Joint Deck (63)
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1

What are the 3 important features on the tibia?

Popliteal area, solar line and Medial Malleolus

2

What are the 4 parts of the Fibula?

Apex, Head, neck and Lateral Malleolus

3

How many muscles are in the posterior compartment?

7 - 3 superficial and 4 deep

4

Where do all the superficial muscles insert on?

Posterior surface of calcareous via tendocalcaneous

5

Where do the tendons of the deep muscles pass?

Pass behind medial malleolus to plantar surface of foot (except popliteus)

6

What are the 3 superficial muscles?

Gastrocnemius, Plantaris and Soleus

7

What is the proximal attachment of the medial head of Gastrocnemius?

Popliteal surface of femur superior to medial condyle

8

What is the proximal attachment of the lateral head of Gastrocnemius?

Lateral aspect of lateral condyle of femur

9

What innervates Gastrocnemius?

Tibial nerve (S1 and S2)

10

What is the action of Gastrocnemius?

Plantarflexes ankle and flexes the knee

11

What is the proximal attachment of Plantaris?

Lateral supracondylar line of femur (proximal to lateral head of Gastrocnemius)

12

What innervates the Plantaris?

Tibial nerve (S1 and S2)

13

What is the action of Plantaris?

Assists plantarflexion of ankle

14

What is the proximal attachment of the Soleus?

Soleal line of Tibia, Upper 1/3rd posterior fibula and Tendinous arch between bony attachments

15

What innervates the Soleus?

Tibial nerve (S1 and S2)

16

What is the action of the Soleus?

Plantarflexes ankle joint

17

What are the 4 deep muscles?

Popliteus, Flexor Digitorum Longus, Flexor Hallucis Longus and Tibialis Posterior

18

What is the proximal attachment of Popliteus?

Lateral condyle of femur and lateral meniscus

19

What is the distal attachment of the Popliteus?

Popliteal area of tibia above solar line

20

What innervates Popliteus?

Tibial nerve (L4, L5 and S1)

21

What is the action of Popliteus?

Unlocks the knee joint by laterally rotating femur on fixed tibia

22

What is the proximal attachment of the Flexor Digitorum Longus?

Posterior surface of tibia

23

What is the distal attachment of the Flexor Digitorum Longus?

Base of distal phalanx of digits 2-5

24

What innervates the Flexor Digitorum Longus?

Tibial nerve (L5, S1 and S2)

25

What is the action of the Flexor Digitorum Longus?

Flexes lateral 4 digits and weak plazntarflexor of ankle

26

What is the proximal attachment of the tibialis posterior?

Posterior surface of tibia and fibula and interosseous membrane

27

What is the distal attachment of the Tibialis Posterior?

Tuberosity of Navicular, Cuneiforms, Cuboid, Sustentaculum tale of Calcaneus, base of 2nd, 3rd and 4th metatarsals

28

What innervates the Tibialis posterior?

Tibial nerve (L4 and L5)

29

What is the action of the Tibialis posterior?

Plantarflexed ankle and inverts foot

30

What is the proximal attachment of the Flexor Hallucis Longus?

Posterior Surface of Fibula