Prosthetics

Question 1

Causes of UE amputations

Answer 1

Trauma
Congenital
Disease

Question 2

Causes of LE amputations

Answer 2

largely a result of disease

Question 3

What is the basic prosthetic goal generally?

Answer 3

Provide appropriate function and appearance to increase independence with ADLs and improve quality of life

Question 4

What are some priorities and challenges for new amputees

Answer 4

Patient/caregiver education
Peer support
Delineate prosthetic expectations
Rebuilding proprioception
Establishing independence and confidence
Establishing good habits

Question 5

Through evaluation process, we want to design a device that meets what kinds of needs?

Answer 5

Activities of daily living
Medical needs
Gainful employment/ Vocational need
Psychological need
Avocational needs
Specific tasks

Question 6

Benefits of an oppositional prosthesis

Answer 6

Provides aesthetic appearance
Light weight & simple
Functions: Opposition, Holding objects, Restore body image
Proprioceptive feedback

Question 7

Limitations of an oppositional prosthesis

Answer 7

No active prehension
High cost for custom
Durability
Patient can have unreal expectations for cosmesis

Question 8

Prosthesis that relies upon gross body movements captured through a harness

Answer 8

body-powered prosthesis aka cable-driven

Question 9

Benefits of a body-powered prosthesis

Answer 9

Moderate cost and weight
Durable
Environmentally resistant
Proprioception through harness system

Question 10

Limitations of a body-powered prosthesis

Answer 10

Grip strength or pinch force
Restrictive & uncomfortable harness
Requires muscle power & excursion
Poor static & dynamic cosmesis

Question 11

What body motions do you need to open the terminal device for a transradial amputation

Answer 11

Biscapular abduction & Humeral flexion

Question 12

What body motions do you need to open the terminal device for a transhumeral amputation and elbow flexion? For prosthetic elbow lock? (Have to lock the elbow before the terminal device is opened)

Answer 12

Biscapular abduction & humeral flexion.

Shoulder depression & humeral abduction & extension

Question 13

Prosthesis that is powered by a battery and uses myoelectric signals. It is controlled by various input methods

Answer 13

Externally powered prosthesis

Question 14

Benefits of an externally powered prosthesis

Answer 14

Stronger grip force
Moderate or no harnessing
Minimal energy expenditure
Least body movement to operate
Moderate aesthetics

Question 15

Limitations of an externally powered prosthesis

Answer 15

Heavier
More expensive
Limited sensory feedback
Extensive therapy training

Question 16

A single prosthesis in which two or more technologies are combined
Less weight than fully powered system
More grip strength than a body powered system

Answer 16

hybrid prosthesis

Question 17

Benefits of hybrid prosthesis

Answer 17

Simultaneous control of the elbow and terminal device

Reduced weight compared to all electric

Question 18

Limitations of hybrid prosthesis

Answer 18

Less pinch with cable controlled TD

Difficult to lift battery powered TD

Question 19

What are the limitations of traditional myoelectric control

Answer 19

Lack of control signals…usually just 2 electrodes
Rely on larger muscle groups for signal
Control muscles usually physiologically inappropriate

Question 20

Post delivery rehab therapy includes:

Answer 20

Donning of prosthesis
Control of components
Functional training
Occupational performance

Question 21

_____ training focuses on promoting readiness for the permanent prosthesis including promoting skin healing, conditioning, preventing contractures, controlling edema, and providing desensitization to the residual limb.

Answer 21

preprosthetic