Lower Leg, Ankle and Foot Anatomy Flashcards Preview

Systems: MSK AB > Lower Leg, Ankle and Foot Anatomy > Flashcards

Flashcards in Lower Leg, Ankle and Foot Anatomy Deck (37)
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1

What are the muscle compartments of the leg?

-Lateral
-Anterior
-Posterior

2

What nerves supply the muscles of the leg?

-Common fibular and its superficial and deep branches
-Tibial nerve (branch of sciatic)

3

What is the most frequently injured joint of the body?

Ankle

4

What type of joint is the ankle?

Uniaxial Synovial hinge

5

Where is the ankle joint located

Between the distal part of tibia,fibula & upper part of talus

6

What is the ankle joint critical in?

Weight bearing and walking

7

What bones are involved in articulation at the ankle?

-Fibula
-Tibia
-Talus

8

What are the 2 prominences present at the ankle joint?

-Medial malleolus
-Lateral malleolus

9

When is malleolar grip strongest?

During dorsiflexion

10

When is the ankle joint unstable?

During plantar felxion

11

What are the features of the ankle capsule?

Thin in front and behind

12

What is the ankle capsule supported by?

Collateral ligaments
-Medial (deltoid) ligament
-Lateral ligament

13

What are the features of the medial (deltoid) ligament of the ankle?

-Large, strong triangular band
-Three slips from medial malleolus to talus, calcaneus & navicular
-Stabilizes the joint during eversion

14

What are the features of the lateral ligament of the ankle?

-Has three slips
-Weaker than medial ligament
-Commonly involved in ankle injuries

15

What muscles are involved in dorsiflexion?

-Tibialis anterior
-Extensor digitorum longus
-Extensor halluces longus
-Peroneus or fibular tertius

16

What muscles are involved in plantar flexion?

-Gastrocnemius
-Soleus
-Assisted by plantaris,
-Tibialis posterior
-Flexor hallucis longus
-Flexor digitorum longus

17

What type of injury is a sprain?

Invesrion injury

18

What is a Pott fracture?

Dislocation of the ankle

19

What is footballer's ankle?

Repeated strain in the anterior capsule

20

What is tarsal tunnel syndrome?

Tibial nerve compression deep to flexor retinacula

21

What aponeurosis is present on the sole of the foot?

Plantar aponeurosis

22

What nerves and arteries run deep to the plantar aponeurosis?

-Lateral plantar nerve and artery
-Medial plantar nerve and artery

23

How many dorsal interossei are there?

4 (bipennate)

24

How may plantar interossei are there?

3 (unipennate)

25

What is the skeleton of the foot divided into?

Tarsus, metatarsus and phalanges

26

What is the function of the foot?

-Support the body in standing and progression
-Lever it forwards in walking, running and jumping

27

Where does inversion and eversion occur in the foot?

Movements occur at the subtalar and transverse tarsal joints

28

What muscles invert the foot?

-Tibialis anterior
-Tibialis posterior

29

What muscles evert the foot?

-Fibularis longus
-Fibularis brevis

30

What are the functions of the arches of the foot?

-Acts as shock absorbers
-Distribute weight over the foot
-Act as springboards during walking,running & jumping