Prosthetic Exam Questions for ABC Written Exam:
Questions & Answers: Updated Guide Solution
/What movements are required to operate a standard trans-radial prosthesis? - Answer-
Biscapular abduction and Gleno-humeral flexion
/.What is the prehension pattern most frequently used by prosthetic hands? - Answer-
Palmar
/.What is the proper orientation when taking an impression for all levels of trans-radial
amputation? - Answer-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 - Answer-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? - Answer-Extensor Pollicis Brevis
/.Polycentric Hinges are used to - Answer-Relieve cubital bunching
/.Which is not a forearm flexor?
- Biceps
- Brachialis
-Supinator
-Pronator Teres - Answer-Supinator
/.The muscles that comprise the rotator cuff are - Answer-Teres minor, supraspinatus,
infraspinatus, subscapularis
/.What is the main cause of upper extremity amputation? - Answer-Trauma
/.How much can the single axis hinge restrict pronation-supination and still be
acceptable for patient use? - Answer-Trick question
Single axis hinge negates pronation-supination
/.The main advantage of the Wrist Flexion Unit over the Flexion Wrist is - Answer-Wrist
flexion unit can rotate in all planes
/.How many positions does a positive locking hinge have? - Answer-11
, /.The correct location of the cross point on a standard trans-radial figure of eight
prosthetic harness is: - Answer-Inferior to C7 toward the sound side
/.What age is best to fit a child with an upper limb deficiency at birth? - Answer-As early
as three months
/.Which muscle is primarily responsible for scapular abduction? - Answer-Serratus
Anterior
/.When would a Krukenberg amputation be recommended? - Answer-Blind bilateral
trans-radial patient
/.Upper Limb Supracondylar Suspension - Answer-- 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 - Answer-Body powered elbow hinges
/.Oven curing is required if the flexible resin content is greater than: - Answer-20%
/.The use of step-up hinges: - Answer-Increases the patient's functional range of motion
/.Polycentric Hinges - Answer-Help lessen cubital fold bunching
/.Elbow flexors - Answer-- Brachialis
- Biceps Brachii
- Anconeous
/.APRL Hook - Answer-- Voluntary Closing
- Lyre shaped fingers
- Self locking feature
- Two finger opening sizes
/.Features of the ulna - Answer-- Trochlear notch
- Coronoid process
- Olecranon
/.Serratus Anterior and Pectoralis Minor - Answer-Work rogether in scapular abduction
/.Biceps muscle - Answer-Is both a primary elbow flexor and supinator
/.A patient using a standard trans-humeral prosthesis should not sue more than ___ of
glenohumeral flexion in order to flex the elbow fully - Answer-45 degrees
/.The main innervation for the elbow flexors is the - Answer-Musculocutaneous nerve
Questions & Answers: Updated Guide Solution
/What movements are required to operate a standard trans-radial prosthesis? - Answer-
Biscapular abduction and Gleno-humeral flexion
/.What is the prehension pattern most frequently used by prosthetic hands? - Answer-
Palmar
/.What is the proper orientation when taking an impression for all levels of trans-radial
amputation? - Answer-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 - Answer-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? - Answer-Extensor Pollicis Brevis
/.Polycentric Hinges are used to - Answer-Relieve cubital bunching
/.Which is not a forearm flexor?
- Biceps
- Brachialis
-Supinator
-Pronator Teres - Answer-Supinator
/.The muscles that comprise the rotator cuff are - Answer-Teres minor, supraspinatus,
infraspinatus, subscapularis
/.What is the main cause of upper extremity amputation? - Answer-Trauma
/.How much can the single axis hinge restrict pronation-supination and still be
acceptable for patient use? - Answer-Trick question
Single axis hinge negates pronation-supination
/.The main advantage of the Wrist Flexion Unit over the Flexion Wrist is - Answer-Wrist
flexion unit can rotate in all planes
/.How many positions does a positive locking hinge have? - Answer-11
, /.The correct location of the cross point on a standard trans-radial figure of eight
prosthetic harness is: - Answer-Inferior to C7 toward the sound side
/.What age is best to fit a child with an upper limb deficiency at birth? - Answer-As early
as three months
/.Which muscle is primarily responsible for scapular abduction? - Answer-Serratus
Anterior
/.When would a Krukenberg amputation be recommended? - Answer-Blind bilateral
trans-radial patient
/.Upper Limb Supracondylar Suspension - Answer-- 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 - Answer-Body powered elbow hinges
/.Oven curing is required if the flexible resin content is greater than: - Answer-20%
/.The use of step-up hinges: - Answer-Increases the patient's functional range of motion
/.Polycentric Hinges - Answer-Help lessen cubital fold bunching
/.Elbow flexors - Answer-- Brachialis
- Biceps Brachii
- Anconeous
/.APRL Hook - Answer-- Voluntary Closing
- Lyre shaped fingers
- Self locking feature
- Two finger opening sizes
/.Features of the ulna - Answer-- Trochlear notch
- Coronoid process
- Olecranon
/.Serratus Anterior and Pectoralis Minor - Answer-Work rogether in scapular abduction
/.Biceps muscle - Answer-Is both a primary elbow flexor and supinator
/.A patient using a standard trans-humeral prosthesis should not sue more than ___ of
glenohumeral flexion in order to flex the elbow fully - Answer-45 degrees
/.The main innervation for the elbow flexors is the - Answer-Musculocutaneous nerve
