UE Prosthetics

Question 1

Factors that influence prosthetic recommendations

Answer 1

Distal amputations
Dominant hand amputation
Family/social support
cognition and age

Question 2

Goals for prosthetic training

Answer 2

Safety
Improve function and independence
Smooth, efficient movements
strength
Acceptance

Question 3

Shoulder suspension

Answer 3

Amputation above elbow
Harness- straps bit over both shoulders
Silicone liners and sleeves @ end of RL

Question 4

Where should the O-ring be placed for a shoulder suspension

Answer 4

near the opposite scapula

Question 5

How would you increase stability for a shoulder suspension

Answer 5

increase number of straps

Question 6

Elbow/ wrist suspension

Answer 6

Self-suspended sockets grip bony prominence of elbow or wrist

Question 7

What is a terminal device

Answer 7

What is at the end of the prosthetic

Question 8

Passive vs active terminal device

Answer 8

Passive=don’t have any movement more for cosmetics
Active: open and close or hold objects

Question 9

Types of Active terminal devices

Answer 9

BOdy powered and external powered

Question 10

Body powered terminal devices

Answer 10

cable and harness
Voluntary opening or voluntary closing

Question 11

External power terminal device

Answer 11

Control the operation with muscle signals or mechanical switches

Question 12

Body powered voluntary opening

Answer 12

open in response to tension on the cable or harness
strength grasp is provided by springs or rubber bands
closes when tension is released

Question 13

Voluntary opening types

Answer 13

hook: lateral pinch, split hook or heavy duty
Mechanical hand

Question 14

Body powered voluntary close

Answer 14

closes in response to tension on the cable or harness
Grasp and holding objects while tension is maintained
wearer determines the strength of the pinch or grasp based on how much tension is applied

Question 15

Myoelectric hand

Answer 15

Active, externally controlled TD
muscle contractions controls TD through electrical signals
typically flexor and extensor control

Question 16

pediatric “cookie crusher”

Answer 16

1 muscle action to open and when the contraction is stopped it closes automatically

Question 17

3 general types of prostheses

Answer 17

Passive
Body-powered
Myoelectric

Question 18

Passive prosthesis

Answer 18

for appearance, no function at the terminal device

Question 19

body-powered prothesis

Answer 19

active terminal device that dependents on movement of cables generated by body movement

Question 20

Myoelectric prothesis

Answer 20

active terminal device that has motor and battery components reliant on muscle signals and contractions

Question 21

below elbow components

Answer 21

tricep cuff- holds RL and elbow joint
elbow hinge
forearm socket
wrist unit
TD
cable system

Question 22

Above elbow components

Answer 22

humeral socket
elbow turn table
elbow unit
forearm shell
wrist unit
TD
Cable system

Question 23

Prosthetic ROM assessment

Answer 23

stump rotation, elbow flexion with prosthesis on if elbow exists
if no elbow how does the elbow unit move

Question 24

Prosthetic TD Assessment

Answer 24

how well does it open in close in various ranges
Forearm at 90, at waist, at mouth

Question 25

Control system efficiency assessment

Answer 25

force applied to TD and harness
measured in lbs

Question 26

Prosthetic stability assessment

Answer 26

how far does it displace if load is added
should not slip more than an inch and harness should not tear
there should be no pain

Question 27

Patient assessment

Answer 27

performance and opinion of comfort
function
appearance

Question 28

What should you do after you know the prosthetic works and fits good

Answer 28

Start training

Question 29

First step of prosthetic training

Answer 29

Bilateral control components
use with existing line
pick up objects with both limbs without any grasping

Question 30

2nd step of prosthetic training

Answer 30

release of objects
being able to drop something, doesn’t have to be controlled

Question 31

3rd step of prosthetic training

Answer 31

controlled release
ex.) dropping, placing and tossing objects

Question 32

4th step of prosthetic training

Answer 32

grasp
reaching for an object, grasping securely
start with easy objects and move into harder
start in front of individual at midline and move out of midline

Question 33

5th step prosthetic training

Answer 33

maintaining hold
using right amount of force and moving the object while holding it

Question 34

Properties of objects that should be used when training

Answer 34

light to heavy
large to small
dense to fragile

Question 35

Overview of steps of training

Answer 35

1. bilateral control
   2.release of objects
2. controlled release
3. grasp
4. maintaining hold and moving