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Upper Extremity Prosthetics > Week 2 > Flashcards

Week 2 Flashcards

1
Q

What does TD stand for?

A

Terminal Device

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2
Q

What is the primary function of TDs?

A

For prehension

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3
Q

What is the type of TD based on?

A

Patient’s ADLs and vocational aspects

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4
Q

What are VO terminal devices?

A

Voluntary opening-open when the cable is pulled

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5
Q

What are VC terminal devices?

A

Voluntary closing-close when the cable is pulled

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6
Q

Which TD is the most common?

A

voluntary opening

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7
Q

What is used in VO TD to grip the object?

A

Spring Tension-tension is applied by the rubber band on the TD

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8
Q

What is an advantage of VC TD?

A

It allows for a graduated grip force that is applied by the individual

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9
Q

What is a disadvantage of VC TD?

A

Individual must lock the TD to continue grasping object.

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10
Q

What is a canted terminal device?

A

Offset hook or hand.

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11
Q

What is the advantage of canted TD?

A

allows better line of sight to object or working space

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12
Q

What are disadvantages of the canted TD?

A

object is rolled into grasp

cannot pick up pins well

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13
Q

What is the Lyre terminal device?

A

straight approach- object is pinched

allows user to pick up pins

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14
Q

What is considered infant size on the Hosmer TD

A

12

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15
Q

What is considered small adult/child on the Hosmer TD

A

10

99

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16
Q

What is considered medium adult on the Hosmer TD?

A

8

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17
Q

What is considered adult on the Hosmer TD?

A

5

555 (lyre shaped)

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18
Q

What is considered work TDs on the Hosmer TD?

A

3
6
7
7LO

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19
Q

What does “A” stand for?

A

Aluminum

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20
Q

What are the advantages of aluminum?

A

lightweight
best for high level UE patients
use for light to moderate prosthetic use

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21
Q

What does SS stand for?

A

Stainless steel

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22
Q

What is the disadvantage of Stainless steel?

A

It is 2x the weight of aluminum TDs

23
Q

When is stainless steel best used for?

A

longer trans-radial prosthetic use
work hooks
best for moderate to heavy prosthetic use

24
Q

What does Ti stand for?

A

Titanium

25
Q

Where does the weight of Titanium fall?

A

heavier than aluminum and lighter than stainless steel

26
Q

When is titanium used

A

for moderate work

27
Q

What does “X” stand for?

A

Nitrile/Neoprene rubber

28
Q

When is nitrile used?

A

on the gripping surfaces for grasping irregular shapes.

29
Q

What is plastisol?

A

Caucasian rubber material used to coat the fingers of the hook.

30
Q

When is plastisol most commonly used?

A

For children

31
Q

What is the advantage of plastisol?

A

increases coefficient of friction

32
Q

What is the disadvantage of plastisol?

A

not heat-resistant

33
Q

What is TRS VC grip Prehensors TD?

A

High strength stainless steel construction
High efficiency body powered prehension
Voluntary closing

34
Q

What can the TRS VC grip Prehensors TD do?

A

can produce up to 100 pounds of pinch force

capable of a wide range of prehension including delicate manipulation to maximum gripping power

35
Q

What is Sure-Lok cable lock control system?

A

Lock system to lock the TD in any position desired
Allows VC TDs to be locked in the closed postion for holding objects without having to hold the same position on the device.

36
Q

What causes the Sure-Lok cable to un-lock?

A

pull of the actuator cable

37
Q

What does APRL stand for?

A

Army Prosthetic Research Laboratory

38
Q

What does CAPP stand for?

A

Child Amputee Prosthetic Program

39
Q

What is the description of a APRL Voluntary Closing Hand?

A

voluntary closing
rubber cosmetic glove
adult male size only
two grip openings

40
Q

What is the description of the SVO hand?

A

Soft Voluntary Opening Hand
Lightweight
Low cost alternative
Dorsal or palmer cable exit

41
Q

What is the description of the Becker Lock Grip Hand?

A

Voluntary Opening
Control Cable will cause all Five fingers to open
Hand has the ability to be locked in the closed position
Prehension is spherical and cylindrical

42
Q

What is the description of the Sierra VO hand?

A

Has a two position stationary thumb

back lock feature allows hand to engage all five fingers

43
Q

What is the description of the Dorrance Mechanical Hands?

A

Serveral Types available
Male Dorrance 400
Female Dorrance 300
Child Dorrance 200

44
Q

What is the description of the CAPP VO hand?

A 
Soft, Durable Urethane cosmesis with a life-like appearance
More functional than most hands
Adjustable spring tension
Improved parent acceptance of  cosmesis
Does not require cosmetic glove
Smooth, VO performance
45
Q

What is the description of a TRS Adept VC hand?

A 
Used for children
Same body as the CAPP hand
made of polyurethane configuration that resembles hand
More cosmetic appearance
More acceptable by parents
46
Q

What is the description of the Baby Mit?

A

Passive Mit for development
Child achieves body Symmetry
helps to protect child during fall
aids in standing or sitting balance
incorporation of the prosthesis in the body image
two sizes and colors for infants and toddlers

47
Q

What is the description of the infant child cosmetic glove/hand?

A 
More often used to replace the Mit
Used for development
body symmetry
protects child from fall
aids in standing and sitting balance
used for gross bi-manual grasp
used as early as 3 months
Weight can be added
48
Q

What is the description of cosmetic gloves?

A 
rubberized covering that protects the hand from contaminations
three levels
stock production glove (least expensive)
custom production glove
custom-sculpted glove
49
Q

What is considered a very short residual limb?

A

less than 35%

50
Q

What is considered a short residual limb?

A

35-55%

51
Q

What is considered a long residual limb?

A

55-90%

52
Q

How many degrees of sup/pronation does a long TR amputee retain?

A

60-120 degrees

53
Q

How many degrees of sup/pronation does a short TR amputee retain?

A

less than 60 degrees

54
Q

What are the different casting techniques?

A 
Muenster
UCLA muenster casting
TRAC-transradial anatomically contoured
Hinge casting 
Upper extremity Negative pressure socket suspension

Upper Extremity Prosthetics (14 decks)

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