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UL Px > WK2: Terminal Devices > Flashcards

WK2: Terminal Devices Flashcards

1
Q

What position does thumb have a lot of anatomical functionality?

Anatomical Hand Function

A

Tip hand position

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2
Q

Active TD

A
  • Body Powered
  • External Powered
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3
Q

Passive TD

A
  • Passive device has to have function
  • Aesthetic restorations
  • Opposition Posts
  • Pediatric Designs
  • Sports and Recreational Adaptations

does not have to move or articulate for it to be useful

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4
Q

What is the most commonly used active TD?

Active Terminal Devices

A

Body power, voluntary opening, hook

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5
Q

Body Power, Voluntary Opening, Hook

Active Terminal Devices

A
  • works well for large amounts of users
  • when user pulls on BP cable, thumb opens tines
  • rubber band closes
  • ease of operation and learning to operate
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6
Q

What is the pinch force of 1 rubber band?

Active Terminal Devices

A

1.5 lbs of pinch at tip of TD

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7
Q

How many lbs of pinch force is adequate for most ADLs

Active Terminal Devices

A

3 lbs of pinch force

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8
Q

5 Steel

Body Power, Voluntary Opening, Hook

A
  • # 5 most commonly used
  • two nonsymmetrical tines that are canted
  • no coating or lining
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9
Q

How does canting affect a TD?

Body Power, Voluntary Opening, Hook

A
  • allows for good visibility for picking up objects
  • limited in picking up very small objects
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10
Q

5XA

Body Power, Voluntary Opening, Hook

A
  • X: Nitrile lined fingers
  • A: Aluminum
  • ribber coating used to inc friction for grasping objects
  • Half weight: can be the difference between wearing and not wearing px
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11
Q

5X

Body Power, Voluntary Opening, Hook

A
  • standard
  • ~5 inch in build height

smaller # = larger terminal device

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12
Q

Benefit of Voluntary Opening

Body Power, Voluntary Opening, Hook

A
  • remained closed under force of rubberband
  • type of grasp requires no active thought or motion
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13
Q

Lyre Opening

Body Power, Voluntary Opening, Hook

A
  • large opening
  • grasp cylindrical
  • easier to grab smaller objects
  • used on one side of bilateral amputation to provide different grasps
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14
Q

Work hook/Farmer’s Hook

Body Power, Voluntary Opening, Hook

A
  • slightly longer
  • specifically designed to handle tools
  • only steel
  • knife holder
  • nail tack holder
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15
Q

Sierra 2-Load Hook

Body Power, Voluntary Opening, Hook

A
  • load = pinch force
  • force can be changed (gentle or firm pinch force)
  • removable and indep. replaceable tines
  • limitations: weight & size
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16
Q

About

Body Power, Voluntary Closing, Hook

A
  • @ rest without any force applied by the pt, the td will be in opening position
  • when force applied, the td will close
17
Q

Benefits

Body Power, Voluntary Closing, Hook

A
  • work envelope is larger
  • user has ability to grasp object in different positions or locations
  • voluntarily control pinch force
  • graded prehension
18
Q

Limitations

Body Power, Voluntary Closing, Hook

A
  • requires active grasp to maintain closure of tines
  • holding something for a long time can be tiring and require a lot of attention
19
Q

APRL

Body Power, Voluntary Closing, Hook

A
  • Army Prosthetics Research Laboratory
  • thumb is on ulnar side
  • automatic lock; manual unlock
  • choose between two different openings (small and large)
  • heavy, delicate, mostly for satisfied propr users
20
Q

Body Power, VO & VC, Hands

Active Terminal Devices

A
  • Biggest advantages is appearance
  • some grasp and release
21
Q

Opposition Post

Passive Terminal Devices

A
  • opposed directly by residual hands
  • allow partial hand to be in flexion and extension
  • can be positioned at greater angle
  • can be folded against forearm out of the way
22
Q

Pediatric Designs

Passive Terminal Devices

A
  • MITT: Fingers not separated; most common
  • in fist: allow child to crawl
  • sports specific: rounded to hold ball or other round object
23
Q

Terminal Devices

Practioner reported use

A
  • 57% use body powered
  • 34% use externally powered
  • 9% use activity specific/passive

UL Px (13 decks)

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