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Upper Extremity Prosthetics > Wrist Units > Flashcards

Wrist Units Flashcards

1
Q

What are some special considerations for the Economy Wrist?

A

Least expensive

The farther the TD into wrist the tighter the friction.

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2
Q

What are some special considerations of the Economy Wrist with straps?

A

Most durable wrist

Can be used with non functioning hand

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3
Q

What does the constant friction wrist provide?

A

Constant friction throughout ROM of TD

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4
Q

What does the constant friction wrist require?

A

Use of other hand or the act of pushing up against another object

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5
Q

What does the oval constant friction wrist provide?

A

Constant friction throughout ROM of TD

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6
Q

What is a special consideration of the Oval Constant Friction wrist?

A

If using a cosmetic hand which is repositioned in SUP/PRO the oval shape will bulge in the glove.
Less cosmetic

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7
Q

What are some special considerations of the WD friction wrist?

A

Shortest wrist unit, least space for TD post

Very simple and inexpensive

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8
Q

What does the CAPP Delrin wrist allow?

A

Constant friction with a unique friction adjustable collar

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9
Q

What are the advantages of the CAPP Delrin wrist?

A

Light weight

ideal for cosmetic hands

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10
Q

What is the Otto Bock Wood hand adapter used for?

A

connecting passive hands to the forearm socket.

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11
Q

What are the advantages of the Otto Bock wood hand adaptor?

A

wrist can be sculpted-more cosmetic

Otto bock has many styles of Hands which can be matched making it more cost effective

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12
Q

What are the disadvantages of the Otto Bock wood hand adapter?

A

uses metric threads so it only works with European passive hands

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13
Q

What is the F-M Quick change wrist designed for?

A

Rapid interchange of different TD

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14
Q

How do you use the F-M quick change wrist unit?

A

Light downward pressure will allow for rotation

Proximal force will lock the TD in position

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15
Q

What does the Wrist disarticulation quick change wrist allow?

A

quick change of TD or position

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16
Q

What are the special considerations for the Wrist disarticulation quick change wrist?

A

Shortest Quick disconnect
Good for long TR or WD
requires patient to grab and twist the ring for locking and unlocking the wrist
Contraindicated for bilaterals

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17
Q

What is a special consideration for the USMC style quick disconnect?

A

It has a different disconnect insert to the Hosmer quick disconnect
Available in round and oval

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18
Q

How many positions does the USMC style quick disconnect have?

A

12 locking positions

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19
Q

What is different between the friction disconnect wrist and the other disconnect wrists?

A

The insert friction can be adjusted.

20
Q

Where does the APRL Child flexion unit intall?

A

Between the TD and wrist to allow flexion

21
Q

What two positions does the APRL Child Flexion Unit wrist flex?

A

0 and 36 degrees

22
Q

Who is the APRL Child flexion unit good for?

A

Bilateral pediatric or long residuum adults

23
Q

Which wrist is the most prescribed?

A

Friction Wrist

24
Q

What are the advantages of the Friction wrist?

A

Durable

Price efficient

25
Q

Who is the Friction wrist made for?

A

Wrist disarticulation

26
Q

What is allowed by the constant friction wrist?

A

Constant friction through out the ROM

27
Q

What is the Quick disconnect wrist unit designed for?

A

Facilitate rapid interchange of different terminal devices

28
Q

Who is the Flexion Wrist good for?

A

Bilateral patients to eat, shave, toilet

29
Q

What does the Flexion Wrist replace?

A

The constant friction wrist

30
Q

What are the positions of the Flexion Wrist?

A

Neutral
30 degrees of volar flexion
50 degrees of volar flexion

31
Q

What are the disadvantages of the flexion wrist?

A

Increased weight

Applied on the dominant side

32
Q

What are the three locking positions of the Sierra Wrist Flexion Unit?

A

O degrees volar flexion
25 degrees volar flexion
50 degrees volar flexion

33
Q

What are the disadvantages of the Sierra Wrist Flexion Unit?

A

Must be coupled with another unit

Adds weight and length

34
Q

What is the rotational wrist controlled by?

A

Cable

35
Q

Who is the rotational wrist indicated for?

A

Bilaterals

36
Q

What is the contraindication of the rotational wrist?

A

Low Gadget tolerance

37
Q

What is the advantage of the Rotational wrist?

A

Greater resistance to rotation than constant friction wrist.

38
Q

Who is the four function wrist indicated for?

A

Bilaterals

39
Q

What does the four function wrist combine?

A 
The rotational wrist and flexion wrist 
Has Flexion
Extension
Supination
Pronation
40
Q

What can the four function wrist be adapted to?

A

The 5 function wrist with cable operated flexion unlock

41
Q

What does the five function wrist combine?

A 
Rotational wrist, flexion wrist and quick disconnect.
Flexion
extension
pronation
supination
quick change feature
42
Q

Who is the five function wrist indicated for?

A

bilaterals

43
Q

What are the contraindications for the five function wrist?

A

low gadget tolerance

44
Q

What can the five function wrist be set up with?

A

Manuel locking and unlocking as well as cable use

45
Q

What does the hands free tool changing station allow?

A

amputees or bilateral dysfunctional individuals to change TD tools

46
Q

What is a special consideration for the hands free tool changing station?

A

Can only be used with the Texas Assistive Device quick disconnect set ups.

Upper Extremity Prosthetics (14 decks)

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