©THESTAR EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
ABC Prosthetics Written Exam Questions
With Verified Answers
What movements are required to operate a standard trans-radial prosthesis? -
Answers✔Biscapular abduction and Gleno-humeral flexion
What is the prehension pattern most frequently used by prosthetic hands? - Answers✔Palmar
What is the proper orientation when taking an impression for all levels of trans-radial
amputation? - Answers✔Neutral Pro-Supination, 90 degrees
Determine efficiency if a force of 6 lbs is necessary to open the TD fully and 9 lbs are needed at
the hanger - Answers✔67% (terminal device force divided by hanger force)
Which muscle acts in the same way a control cable pulls on the thumb of the terminal device? -
Answers✔Extensor Pollicis Brevis
Polycentric Hinges are used to - Answers✔Relieve cubital bunching
Which is not a forearm flexor?
- Biceps
- Brachialis
-Supinator
-Pronator Teres - Answers✔Supinator
The muscles that comprise the rotator cuff are - Answers✔Teres minor, supraspinatus,
infraspinatus, subscapularis
What is the main cause of upper extremity amputation? - Answers✔Trauma
How much can the single axis hinge restrict pronation-supination and still be acceptable for
patient use? - Answers✔Trick question
Single axis hinge negates pronation-supination
, ©THESTAR EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
The main advantage of the Wrist Flexion Unit over the Flexion Wrist is - Answers✔Wrist
flexion unit can rotate in all planes
How many positions does a positive locking hinge have? - Answers✔11
The correct location of the cross point on a standard trans-radial figure of eight prosthetic
harness is: - Answers✔Inferior to C7 toward the sound side
What age is best to fit a child with an upper limb deficiency at birth? - Answers✔As early as
three months
Which muscle is primarily responsible for scapular abduction? - Answers✔Serratus Anterior
When would a Krukenberg amputation be recommended? - Answers✔Blind bilateral trans-radial
patient
Upper Limb Supracondylar Suspension - Answers✔- Is frequently used with external power
prostheses
- May restrict elbow flexion
- Frequently uses figure of 9 harnessing with body powered prostheses
Split housing cable is required when using - Answers✔Body powered elbow hinges
Oven curing is required if the flexible resin content is greater than: - Answers✔20%
The use of step-up hinges: - Answers✔Increases the patient's functional range of motion
Polycentric Hinges - Answers✔Help lessen cubital fold bunching
Elbow flexors - Answers✔- Brachialis
- Biceps Brachii
- Anconeous
APRL Hook - Answers✔- Voluntary Closing
- Lyre shaped fingers
- Self locking feature
- Two finger opening sizes
Features of the ulna - Answers✔- Trochlear notch
- Coronoid process
ALL RIGHTS RESERVED.
ABC Prosthetics Written Exam Questions
With Verified Answers
What movements are required to operate a standard trans-radial prosthesis? -
Answers✔Biscapular abduction and Gleno-humeral flexion
What is the prehension pattern most frequently used by prosthetic hands? - Answers✔Palmar
What is the proper orientation when taking an impression for all levels of trans-radial
amputation? - Answers✔Neutral Pro-Supination, 90 degrees
Determine efficiency if a force of 6 lbs is necessary to open the TD fully and 9 lbs are needed at
the hanger - Answers✔67% (terminal device force divided by hanger force)
Which muscle acts in the same way a control cable pulls on the thumb of the terminal device? -
Answers✔Extensor Pollicis Brevis
Polycentric Hinges are used to - Answers✔Relieve cubital bunching
Which is not a forearm flexor?
- Biceps
- Brachialis
-Supinator
-Pronator Teres - Answers✔Supinator
The muscles that comprise the rotator cuff are - Answers✔Teres minor, supraspinatus,
infraspinatus, subscapularis
What is the main cause of upper extremity amputation? - Answers✔Trauma
How much can the single axis hinge restrict pronation-supination and still be acceptable for
patient use? - Answers✔Trick question
Single axis hinge negates pronation-supination
, ©THESTAR EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
The main advantage of the Wrist Flexion Unit over the Flexion Wrist is - Answers✔Wrist
flexion unit can rotate in all planes
How many positions does a positive locking hinge have? - Answers✔11
The correct location of the cross point on a standard trans-radial figure of eight prosthetic
harness is: - Answers✔Inferior to C7 toward the sound side
What age is best to fit a child with an upper limb deficiency at birth? - Answers✔As early as
three months
Which muscle is primarily responsible for scapular abduction? - Answers✔Serratus Anterior
When would a Krukenberg amputation be recommended? - Answers✔Blind bilateral trans-radial
patient
Upper Limb Supracondylar Suspension - Answers✔- Is frequently used with external power
prostheses
- May restrict elbow flexion
- Frequently uses figure of 9 harnessing with body powered prostheses
Split housing cable is required when using - Answers✔Body powered elbow hinges
Oven curing is required if the flexible resin content is greater than: - Answers✔20%
The use of step-up hinges: - Answers✔Increases the patient's functional range of motion
Polycentric Hinges - Answers✔Help lessen cubital fold bunching
Elbow flexors - Answers✔- Brachialis
- Biceps Brachii
- Anconeous
APRL Hook - Answers✔- Voluntary Closing
- Lyre shaped fingers
- Self locking feature
- Two finger opening sizes
Features of the ulna - Answers✔- Trochlear notch
- Coronoid process
