03 Final Exam Study Guide 4 Flashcards Preview

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Flashcards in 03 Final Exam Study Guide 4 Deck (42):
1

Which ligaments restrain motion during plantarflexion?

- anterior half of deltoid ligament
- anterior tib-fib ligament
- anterior aspect of capsule
- anterior elements of medial and lateral ligaments
- calcaneofibular ligament

2

Which ligaments restrain motion during dorsiflexion?

- posterior aspect of capsule
- posterior elements of medial and lateral ligaments
- posterior half of deltoid ligament
- posterior tibiofibular ligament
- posteiror talofib
- calcaneal ligament

3

Which ligaments limit medial motion?

lateral ligaments

4

Which ligaments limit lateral motion?

medial ligaments

5

foot sliding forward is called

anterior translation

6

Which structures limit anterior translation of the ankle?

structures on the anterior ankle

7

Which structures limit posterior translation of the ankle?

structures on the posterior ankle

8

How do we divid the talus?

anterior and posterior half

9

posterior half of the talus

trochlea and body

10

What does the posterior half of the talus connect to?

distal tibiofibular ligament

11

anterior half of the talus

neck and head

12

What does the anterior portion of the talus connect to?

gives connection to the foot itself

13

Where do inversion and eversion occur?

at the subtalar joint

14

what are the tarsals?

- talus
- calcaneus
- navicular
- cuboid
- 3 cuneiforms

15

What is the midline of the foot?

2nd metatarsal (ray)

16

rigidity/flexibility of the rays

- medial 2 are rigid
- lateral 3 are flexible

17

dynamic restraints of medial longitudinal arch

3 main ones
- peroneus longus
- tibialis anterior
- tibialis posterior

18

How do dynamic restraints of medial longitudinal arch function?

create a buttress at the apex of the arch

19

What is under constant tension during the gait cycle?

springs (supporting structures)

20

What happens to the springs and the arch during the WB part of the gait cycle?

- medial arch flattens out
- "spring" lengthens

21

pes plantis

flat foot

22

2 types of pes plantis

- rigid
- flexible

23

rigid pes plantis

decreased arch height in WB and NWB

24

flexible pes plantis

decreased arch height during WB

25

plane of motion of the foot: plantarflexion/dorsiflexion

sagittal

26

plane of motion of the foot: inversion/eversion

frontal

27

plane of motion of the foot: abduction/adduction

transverse plane on vertical axis

28

Anterior structures are dorsiflexors and posterior structures are plantarflexors if you draw a line through these structures

straight line through medial and lateral malleolus

29

medial muscles of the lower leg are _____

inverters

30

lateral muscles of the lower leg are ______

everters

31

What happens to the structures during an inversion sprain?

- everters and lateral ligaments are stretched
- everters contract after the ligaments start to give way

32

Which are the dynamic restraints of ankle inversion?

everters

33

What is an indication that you may have a grade 3 or severe inversion sprain?

lateral leg pain

34

3 muscles of the lower leg that cross the knee

- gastrocs
- plantarus
- popliteus

35

tibialis posterior: distal attachments

- all tarsals minus talus and calcaneus
- all metatarsals except the first one

36

peroneus tertius is in a compartment with the

extensor digitorum longus

37

Which of the peroneus muscles are plantarflexors and which are dorsiflexors

- longus and brevis are plantarflexors
- tertius is dorsiflexor

38

In addition to plantarflexion and (pronation?), what else does the peroneus longus do with respect to the arch?

dynamic restraint of medial longitudinal arch

39

Lis Franc fracture

- fx at either the base of the first or second metatarsal and/or a ligament rupture

40

What is the Lis Franc ligament?

thick, powerful structure at the tarsometatarsal joint that connects the 5 metatarsals

41

Where is the Lis Franc ligament the most powerful?

at first 2 rays

42

Why is the Lis Franc injury so catastrophic?

structural integrity of the foot is destroyed