Week 2 Flashcards
What does TD stand for?
Terminal Device
What is the primary function of TDs?
For prehension
What is the type of TD based on?
Patient’s ADLs and vocational aspects
What are VO terminal devices?
Voluntary opening-open when the cable is pulled
What are VC terminal devices?
Voluntary closing-close when the cable is pulled
Which TD is the most common?
voluntary opening
What is used in VO TD to grip the object?
Spring Tension-tension is applied by the rubber band on the TD
What is an advantage of VC TD?
It allows for a graduated grip force that is applied by the individual
What is a disadvantage of VC TD?
Individual must lock the TD to continue grasping object.
What is a canted terminal device?
Offset hook or hand.
What is the advantage of canted TD?
allows better line of sight to object or working space
What are disadvantages of the canted TD?
object is rolled into grasp
cannot pick up pins well
What is the Lyre terminal device?
straight approach- object is pinched
allows user to pick up pins
What is considered infant size on the Hosmer TD
12
What is considered small adult/child on the Hosmer TD
10
99
What is considered medium adult on the Hosmer TD?
8
What is considered adult on the Hosmer TD?
5
555 (lyre shaped)
What is considered work TDs on the Hosmer TD?
3
6
7
7LO
What does “A” stand for?
Aluminum
What are the advantages of aluminum?
lightweight
best for high level UE patients
use for light to moderate prosthetic use
What does SS stand for?
Stainless steel
What is the disadvantage of Stainless steel?
It is 2x the weight of aluminum TDs
When is stainless steel best used for?
longer trans-radial prosthetic use
work hooks
best for moderate to heavy prosthetic use
What does Ti stand for?
Titanium
Where does the weight of Titanium fall?
heavier than aluminum and lighter than stainless steel
When is titanium used
for moderate work
What does “X” stand for?
Nitrile/Neoprene rubber
When is nitrile used?
on the gripping surfaces for grasping irregular shapes.
What is plastisol?
Caucasian rubber material used to coat the fingers of the hook.
When is plastisol most commonly used?
For children
What is the advantage of plastisol?
increases coefficient of friction
What is the disadvantage of plastisol?
not heat-resistant
What is TRS VC grip Prehensors TD?
High strength stainless steel construction
High efficiency body powered prehension
Voluntary closing
What can the TRS VC grip Prehensors TD do?
can produce up to 100 pounds of pinch force
capable of a wide range of prehension including delicate manipulation to maximum gripping power
What is Sure-Lok cable lock control system?
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.
What causes the Sure-Lok cable to un-lock?
pull of the actuator cable
What does APRL stand for?
Army Prosthetic Research Laboratory
What does CAPP stand for?
Child Amputee Prosthetic Program
What is the description of a APRL Voluntary Closing Hand?
voluntary closing
rubber cosmetic glove
adult male size only
two grip openings
What is the description of the SVO hand?
Soft Voluntary Opening Hand
Lightweight
Low cost alternative
Dorsal or palmer cable exit
What is the description of the Becker Lock Grip Hand?
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
What is the description of the Sierra VO hand?
Has a two position stationary thumb
back lock feature allows hand to engage all five fingers
What is the description of the Dorrance Mechanical Hands?
Serveral Types available
Male Dorrance 400
Female Dorrance 300
Child Dorrance 200
What is the description of the CAPP VO hand?
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
What is the description of a TRS Adept VC hand?
Used for children Same body as the CAPP hand made of polyurethane configuration that resembles hand More cosmetic appearance More acceptable by parents
What is the description of the Baby Mit?
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
What is the description of the infant child cosmetic glove/hand?
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
What is the description of cosmetic gloves?
rubberized covering that protects the hand from contaminations three levels stock production glove (least expensive) custom production glove custom-sculpted glove
What is considered a very short residual limb?
less than 35%
What is considered a short residual limb?
35-55%
What is considered a long residual limb?
55-90%
How many degrees of sup/pronation does a long TR amputee retain?
60-120 degrees
How many degrees of sup/pronation does a short TR amputee retain?
less than 60 degrees
What are the different casting techniques?
Muenster UCLA muenster casting TRAC-transradial anatomically contoured Hinge casting Upper extremity Negative pressure socket suspension
