Ankle Flashcards

1
Q

the higher the value, the better the chance to rule in the condition or pathology

A

Specificity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

navicular drop test

A
  • To quantify the amount of foot pronation
  • Intended to represent the sagittal plane displacement of the navicular tuberosity from a neutral position to a relaxed position in standing.
  • Assess change in height of the navicular from a subtalar neutral position to relaxed standing (6-8 mm normal; > 10-15 excessive)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

IF THERE IS NOT SUFFICIENT EVERSION IN A VARUS
DEFORMITY THEN THE FOOT CANNOT COMPENSATE USING EVERSION AND WILL REMAIN IN A VARUS POSITION WHEN IN WEIGHTBEARING. IN THIS CASE THE MEDIAL BORDER OF THE FOOT WILL NOT TOUCH THE FLOOR, OR TOUCH IT VERY LIGHTLY. This foot will be _________ in WB.

A

supinated​

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what muscle keeps the 1st ray on the ground during gate?

A

fibularis longus

(eversion and plantar flexion)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

which joint of the foot has the biggest component in pronation and supination?

A

both subtalar joint and midtarsal joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Uncompensated rearfoot varus in non weight bearing

A

No or extremely limited STJ eversion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How to find subtalar joint neutral

A
  1. Pt in prone
  2. Palpate medial and lateral talus
  3. Apply a force in DF to 4th and 5th metatarsals and IN and EV
  4. When talus feels equally in both fingers
  5. Mesure with gonio

Varus or vertical, valgus is rare.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q
A

During pronation the axes of the STJ/MTJ are parallel giving more mobility

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Subtalar joint ROM measurement technique

A
  • More IN (avg = 38.7°)
  • than EV (avg = 9.9°)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

presence of subtalar joint eversion during NWB,

in WB: low arch, calcaneus everts to vertical or more, medial talar bulge, lateral fatpads bulge

A

compensated rearfoot varus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Orthotic goal with uncompensated rearfoot varus

A

bring the ground to the foot

  • medial rearfoot varus POST
  • will prevent the need for compensations from initial contact to early
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

IF THERE IS SUFFICIENT EVERSION IN A VARUS
DEFORMITY THEN THE FOOT WILL COMPENSATE BY EVERTING A GREAT DEAL UNTIL THE MEDIAL BORDER OF THE CALCANEUS IS ON THE FLOOR. This foot will be _________ in WB.

A

hyper-pronated​

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q
A

Forefoot varus, inverted forefoot

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Manter originally described two axes of rotation for movement at the transverse tarsal joint:

A

longitudinal and oblique

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

subtalar joint rearfoot varus vs valgus

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

orthotic goal of a compensated rearfoot varus

A
  • controll but not eliminate STJ eversion from initial contact to MST
  • Medial rearfoot varus post (corrective post, not supportive)
  • Arch support
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

the higher the value, the better the chance to rule out the condition or pathology

A

Sensitivity

18
Q

if the calcaneus everts to vertical or beyond

A

compensated calcaneus varus

19
Q
A

calcaneal varus or rearfoot varus

20
Q
A

uncompensated calcaneus varus

21
Q

the primary movements of the longitudinal axis of the midtarsal joint are

A

eversion and inversion

22
Q

laud walker, calcaneus remains varus (> 7 deg), Med to high arch, LE is ER

A

uncompensated rearfoot varus in WB

23
Q

if the calcaneus everts but not to vertical

A

partially compensated

24
Q

1st ray of the foot is composed of

A

the functional unit of 1st metatarsal & 1st cuneiform

25
Q

Self-report measures for the foot and ankle

A
  • LEFS: Lower Extremity Functional Scale
  • FAAM: Foot and Ankle Ability Measure
26
Q

which is the most stable ray of the foot?

A

2nd and 3rd rays

27
Q

Uncompensated rearfoot varus in weight bearing

A
  • calcaneus remains varus (> 7 deg)
  • Med to high arch
  • LE is ER
28
Q

locking o the midfoot occurs as

A
  • during supination, STJ and MTJ axes are not parallel giving less mobility
29
Q

The windlass action causes the longitudinal arches of the foot to rise when the toes are extended as well as stiffening the fibrous tissues of the ball of the foot during push-off.

A

WINDLASS MECHANISM

30
Q

the primary movements of the oblique axis of the midtarsal joint are

A
  • abduction and DF
  • adduction and PF
31
Q

what happens at the subtalar joint at heel strike?

A

supination, then it goes into pronation

32
Q

during the loading phase of walking, the 1st ray _______ and ______

A

dorsiflexes and everts

33
Q

which is the most mobile ray of the foot:

A

1st ray and 5th ray

34
Q

If the calcaneus is in the same position as the subtalar joint

A

uncompensated calcaneus varus

35
Q
A

calcaneal valgus or rearfoot valgus

36
Q

The transverse tarsal joint, also known as the midtarsal joint, consists of two anatomically distinct articulations:

A
  1. talonavicular joint
  2. calcaneocuboid joint.
37
Q

Excessive navicular drop has been reported in patients with a history of

A
  • ACL tears
  • and is thought to predispose individuals to shin splints
  • and medial tibial stress syndrome.
  • It may also help identify individuals who would benefit from prefabricated orthotics and modified
    activity in those with patellofemoral pain syndrome.
  • Headlee et al also found a positive NDT as being indicative of plantar intrinsic muscle fatigue.
38
Q
A

Forefoot valgus, everted forefoot

39
Q
A

Plantar-flexed first ray

40
Q

During walking, the 1st ray _______ and ______ during the propulsion phase

A

Plantarflexes and inverts