Orthotics Lab 2: Knee Orthoses (2/10/17) Flashcards

(54 cards)

1
Q

when considering the characteristics of KOs, it is helpful to classify the orthoses as…

A

flexible, semi-rigid, rigid

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

is an elastic knee orthosis flexible, semi-rigid, or rigid

A

flexible

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

are there any motions which are limited or restricted by an elastic knee orthosis

A

no movement is limited or restricted with this

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

what is the function of an elastic knee orthosis

A

it retains heat in the area, may reduce edema, and provide proprioceptive feedback

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

what are typical indications for an elastic knee orthosis

A

patients with arthritis in the knee, edema, knee sprains

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

is an elastic KO with medial lateral support flexible, semi-rigid, or rigid

A

semi-rigid

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

are there any motions restricted by the elastic KO with medial lateral support

A

valgus and varus are somewhat controlled

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

why is varus and valgus controlled by Elastic KO with Medial Lateral Support

A

medial and lateral vertical bars

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

does a true three point pressure system that uses rigid bars and bands exist for an Elastic KO with Medial Lateral Support

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the function of an Elastic KO with Medial Lateral Support

A

the same as an elastic KO (retains heat, reduce edema, provide proprioceptive feedback)

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

what are typical indications for an Elastic KO with Medial Lateral Support

A

patients with knee arthritis, edema, and minor knee sprains

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

is the Knee Immobilizer flexible, semi-rigid, or rigid

A

semi-rigid

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

what is the optimum fit of the Knee Immobilizer

A

it should extend superiorly to the upper third of the thigh and inferiorly to approximately 1-1.5 inch above the malleoli

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

the anterior cut of the Knee Immobilizer should be positioned…

A

over the patella

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

are there any motions restricted by the Knee Immobilizer

A

some say 3 point pressure system limits knee flexion, extension, varus, and valgus

full restriction of movement is questionable because of semi-rigid design

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

what is the function of the Knee Immobilizer

A

may be used to decrease movement at the knee post-surg or post trauma

or to assist with upright postural control when there is weakness at the knee (ex-stroke)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what are typical indications for the Knee Immobilizer

A

patient with TKR, acute knee trauma, or weakness at the knee

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what are advantages of the Knee Immobilizer over the Elastic KO

A

longer leverage and vertical bars (stays) provide greater support to knee

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

is the Adjustable Knee Immobilizer flexible, semi-rigid, or rigid

A

semi-rigid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

are any motions restricted by the Adjustable Knee Immobilizer

A

it provides tactile cues/increase kinesthetic awareness which may decrease all motions at the knee (hyperextension, flexion, valgus, varus)

questionable because of the semi-rigid design

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

if motions are restricted what component parts must be present (Adjustable Knee Immobilizer)

A

horizontal bands

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

3 point pressure system for hyperextension for the Adjustable Knee Immobilizer

A

secondary: combined anterior directed force originating posteriorly from the supra and infra popliteal margins
primary: posterior directed forces originating anteriorly at the superior and inferior margins of the brace

23
Q

3 point pressure system for valgus for the Adjustable Knee Immobilizer

A

a laterally directed force originating from the central portion of the medial bar is balanced by medially directed forces originating from the superior and inferior portion of the lateral bar

24
Q

3 point pressure system for varus for the Adjustable Knee Immobilizer

A

a medially directed force originating from the central portion of the lateral bar balanced by laterally directed forces originating from the superior and inferior portion of the medial bar

25
what are normal indications for the Adjustable Knee Immobilizer
it is recommended acutely for post operative or post-traumatic management of the knee
26
what are advantages of the Adjustable Knee Immobilizer over the Elastic KO/Elastic KO with medial/lateral support
the adjustable knee immobilizer is more restrictive because of increased length and rigid construction (if horizonatal hardware is present)
27
is the Resting/Positional Splint for the Knee flexible, semi-rigid, or rigid?
rigid
28
describe the optimum fit of the Resting/Positional Splint for the Knee
the longer the brace, the greater the leverage to maintain ROM at the knee. this orthosis should extend superiorly to the upper 1/3rd of the thigh and inferiorly to approx. 1-1.5 inches above the malleoli
29
what motions restricted by the Resting/Positional Splint for the Knee
flexion, extension, valgus, varus
30
LOOK AT THE 3 POINT PRESSURE SYSTEM PAGE 7
yings
31
what is the function of the Resting/Positional Splint for the Knee
maintain/increase ROM at the knee
32
when might the Resting/Positional Splint for the Knee be worn
night use to gain ROM | don't want to restrict LE function during the day
33
what are the typical indications for the Resting/Positional Splint for the Knee
knee flexion contractures
34
is the Knee Orthosis with Hyperextension Control - Swedish Knee Cage flexible, semi-rigid, or rigid
rigid
35
are there any motions controlled at the knee with the Resting/Positional Splint for the Knee
hyperextension
36
LOOK AT THE HYPEREXTENSION 3 POINT PRESSURE SYSTEM ON PAGE 8
hi
37
what are typical indications for the Resting/Positional Splint for the Knee
people with mild hyperextension at the knee stroke, arthritis, hypotonia
38
disadvantages of the Resting/Positional Splint for the Knee
cosmetics - it is bulky and protrudes when sitting
39
is the Knee Orthosis with Hyperextension, Medial-Lateral Control-Three Way Knee Stabilizer flexible, semi-rigid, or rigid
rigid
40
what motions are controlled/restricted by the Knee Orthosis with Hyperextension, Medial-Lateral Control-Three Way Knee Stabilizer
hyperextension, valgus, varus
41
SEE PAGE 9 FOR 3 POINT PRESSURE SYSTEM
yings
42
what are typical indications for Medial-Lateral Control-Three Way Knee Stabilizer
for mild hyperextension, valgus, or varus at the knee
43
why would the Medial-Lateral Control-Three Way Knee Stabilizer be preferred over the Swedish Knee Cage
the Medial-Lateral Control-Three Way Knee Stabilizer is more cosmetically acceptable and additionally controls medial/lateral motion
44
is the Knee Orthosis with Hyperextension, Medial-Lateral Control-Molded Plast Solid Knee Orthosis flexible, semi-rigid, or rigid
rigid
45
are there any motions restricted by the Knee Orthosis with Hyperextension, Medial-Lateral Control-Molded Plast Solid Knee Orthosis
hyperextension, valgus, and varus
46
LOOK AT PAGE 10 FOR VARIOUS 3 POINT PRESSURE SYSTEMS
yup
47
what are typical indications for Knee Orthosis with Hyperextension, Medial-Lateral Control-Molded Plast Solid Knee Orthosis
for mild hyperextension, valgus, or varus at the knee
48
is the Knee Orthosis with Anterior-Posterior, Medial-Lateral, and Rotary/Translation Control flexible, semi-rigid, or rigid
rigid
49
describe the position of Knee Orthosis with Anterior-Posterior, Medial-Lateral, and Rotary/Translation Control for optimal fit
it extends to the middle third of the thigh superiorly and the middle third of the lower leg inferiorly
50
are there any motions controlled by the Knee Orthosis with Anterior-Posterior, Medial-Lateral, and Rotary/Translation Control
hyperextension, valgus, varus, rotation/translation
51
page 12, 3 point system
yings
52
what type of knee joint is found on Knee Orthosis with Anterior-Posterior, Medial-Lateral, and Rotary/Translation Control
a polycentric knee (as opposed to a single axis knee) joint
53
what does the polycentric knee joint allow for
flexion and extension around an instantaneous axis of rotation (which more closely resembles knee)
54
typical indications for Knee Orthosis with Anterior-Posterior, Medial-Lateral, and Rotary/Translation Control
when there is significant ligamentous damage to the knee and the individual still wishes to stay active also post surgical in the sub-acute/chronic phase