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Prosthetics > Upper Extremity Prosthetics > Flashcards

Upper Extremity Prosthetics Flashcards

1
Q

What does disarticulation mean can happen

A

Have distal end weight bearing/contact

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2
Q

Short transhumeral length

A

30-50%

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3
Q

Standard transhumeral length

A

50-90%

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4
Q

Very short transradial length

A

Less than 35%

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5
Q

Short transradial length

A

35-50%

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6
Q

Long transradial length

A

Greater than 50%

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7
Q

True or False:

A long transradial amputation has supination/pronation which gives a better prognosis

A

True

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8
Q

What is a voluntary open hook or hand

A

The hook or hand is always closed and has to be opened voluntarily

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9
Q

What is a voluntary close hook or hand

A

The hook or hand is always open and has to closed voluntarily

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10
Q

What determines the pinch force of a hook

A

Number of rubberbans

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11
Q

True or False:

There are standard and heavy duty hooks

A

True

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12
Q

What is the shape of the hook

A

Lyre-canted shape

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13
Q

What does the lyre-canted shape allow for

A

Allows the patient to feed themself

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14
Q

True or False:

The hand is interchangeable with a hook

A

True

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15
Q

True or False:

The hand can be active or passive for cosmesis

A

True

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16
Q

What fingers typically move in a prosthetic hand

A

Thumb, pointer, and middle finger (digits I-III)

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17
Q

What type of grip does a prosthetic hand use

A

Three jaw chuck

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18
Q

True or False:

Prosthetic hands can have a cosmetic glove that can be put on them

A

True

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19
Q

True or False:

With a child we are trying to promote crawling and getting them upright

A

Trur

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20
Q

What is the hook good at grasping

A

Small objects

21
Q

What is the hand good at grasping

A

Large objects

22
Q

True or False:

Use of the hook in restricted areas is better with the hook when compared to the hand

A

True

23
Q

True or False:

The weight, cost, and maintenance of the hook are less than the hand

A

True

24
Q

With unilateral amputees what is the purpose of the prosthesis

A

To serve as a helper

25
Q

True or False:
For a unilateral amputee the prosthesis is not required to perform intricate delicate tasks they just use the intact limb

A

True

26
Q

True or False:

With a bilateral amputee all activities are performed with the prosthesis

A

True

27
Q

True or False:

With a bilateral amputee two hands are rarely provided in the design

A

True

28
Q

What does the wrist unit do

A

Attaches the terminal device to the prosthesis

29
Q

True or False:
The patient will actively change the amount of pronation/supination with their intact limb or by pushing wrist against body to achieve the most functional position

A

True

30
Q

What does TD stand for

A

Terminal device

31
Q

True or False:

The wrist unit allows for interchange of terminal devices

A

True

32
Q

What are the 3 types of wrist units

A
  1. Friction
  2. Locking/quick release
  3. Flexion
33
Q

What is a friction wrist unit

A

Compressed rubber washer that allows pronation/supination, it is oval or round

34
Q

True or False:

Most bilateral amputees wear bilateral friction wrist units

A

True

35
Q

What is the locking/quick release wrist unit

A

Manual rotation then lock terminal device in fixed position

36
Q

True or False:

locking/quick release wrist units have a button or three rings

A

True

37
Q

True or False:

A shorter limb makes holding the distal end of the limb in flexed position harder

A

True

38
Q

What is different about a Muenster style prosthesis

A

It encases the epicondyles for suspension

39
Q

What do you lose with the Muenster style prosthesis

A

Elbow flexion

40
Q

What type of harness system is used for a transradial amputation or wrist disarticulation (2)

A
  1. Figure 8

2. Figure 9

41
Q

Where does the axillary loop go and its function

A

Contralateral arm to stabilize the prosthesis

42
Q

Where does the ring or cross point go

A

Below 7th cervical vertebra and toward the non-amputated side

43
Q

Where does the control attachment strap go

A

Lower scapula on amputated side to control cable

44
Q

Where does the anterior support strap or inverted Y go

A

Ipsilateral deltopectoral groove

45
Q

What do the harness systems offer (3)

A
  1. Efficient suspension
  2. Control of rotation
  3. Tolerate axial load bearing
46
Q

What happens with a figure 9 harness

A

You lose elbow flexion

47
Q

How do you use the terminal device in a transhumeral amputation

A

By depressing the shoulder to lock the elbow before using the terminal device

48
Q

Almost the end of the semester you know what that means

A

8==D

YAY DICKS!!!!!

Prosthetics (8 decks)

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