MSK Session 11- The Posterior Compartment Of The Leg Flashcards Preview

SOPHIE'S ESA 2 > MSK Session 11- The Posterior Compartment Of The Leg > Flashcards

Flashcards in MSK Session 11- The Posterior Compartment Of The Leg Deck (26)
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1
Q

What is the common distal attachment site of the three superficial muscles?

A

The calcaneal tendon

2
Q

What is the alternative name for the calcaneal tendon?

A

Achilles’ tendon

3
Q

What is the innervation of all the posterior leg muscles?

A

The tibial nerve

4
Q

What is the tibial nerve a branch of?

A

The sciatic nerve

5
Q

What is the main action of the superficial muscles?

A

Plantar flexion of the foot

6
Q

What are the two actions of gastrocnemius?

A
  • plantar flexion of the foot

- flexion of the knee

7
Q

What are the two functions of plantaris?

A

Plantar flexion of the foot

Flexion of the knee

8
Q

What is the action of soleus?

A

Plantar flexion of the foot

9
Q

What are the four deep muscles of the posterior leg?

A

Popliteus
Flexor digitorum longus
Tibialis posterior
Flexor hallicus longus

10
Q

What is the action of popliteus?

A

Unlocking of the knee by laterally rotating it over the tibia.

11
Q

What is the action of flexor digitorum longus?

A

Flexes the lateral 4 toes

12
Q

What are the actions of tibialis posterior? (2)

A

Inversion and plantar flexion of the foot.

13
Q

What is the action of flexor hallicus longus?

A

Flexion of the great toe

14
Q

What is the order of the deep muscles from medial to lateral?

A

Flexor digitorum longus
Tibialis posterior
Flexor hallicus longus

15
Q

What is the order of structures around the medial malleolus?

A

Posterior to the medial malleolus:

  • tibialis posterior
  • flexor digitorum longus
  • tibial artery
  • tibial vein
  • tibial nerve
  • flexor hallicus longus
16
Q

Where do you measure the true leg length?

A

ASIS to the medial malleolus

17
Q

Where do you measure the relative leg length?

A

From the greater trochanter to the medial malleolus

18
Q

What are the two branches of the sciatic nerve?

A

The tibial nerve and the common fibular nerve

19
Q

What are the two branches of the common fibular nerve? What do they supply?

A

The deep and superficial fibular nerve

The anterior and lateral compartments of the leg respectively.

20
Q

What is the course of the long saphenous vein?

A

It begins from the Dorsal venous arch and runs anterior to the medial malleolus before continuing up the medial aspect of the leg and draining into the femoral vein.

21
Q

What is the course of the short saphenous vein?

A

It begins at the dorsal venous arch and travels posterior to the lateral malleolus and up the posterior leg before draining into the popliteal vein.

22
Q

What two branches does the popliteal artery give?

A

The posterior and anterior tibial arteries.

23
Q

What is the fibular artery a branch of?

A

The posterior tibial artery.

24
Q

What are the four points of palpation?

A

Femoral artery
Popliteal artery
Dorsalis pedis artery
Posterior tibial artery

25
Q

What are the three superficial muscles of the posterior leg?

A

Gastocnemius
Soleus
Plantaris

26
Q

Why is the lower part of the calcaneus tendon often a point of weakness?

A

Because it has a poor blood supply.

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