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ABC Prosthetic Written Exam Prep
QUESTION: Which are alternatives for a standard trans-humeral prosthesis - ANSWER-Chest
strap and shoulder harness, shoulder sling, triple control
QUESTION: The lateral suspensor in a standard trans-humeral prosthesis functions as -
ANSWER-Main suspensor
QUESTION: A cross back strap is used on a trans-humeral prosthesis to primarily -
ANSWERIncrease control cable efficiency
QUESTION: How long should the control attachment strap be? - ANSWER-Long enough to lay
flat against the back
QUESTION: If the radial nerve was severed which muscles would be affected - ANSWER-Triceps
QUESTION: If the hook inadvertently opens in a standard trans-radial prosthesis, it is most likely
because - ANSWER-the harness is too tight
QUESTION: The axilla strap in a standard trans-humeral prosthesis functions primarily as -
ANSWER-An anchor for the harness
QUESTION: An inverted Y strap attachment on a standard trans-radial prosthesis that is too
distal will result in - ANSWER-Prosthesis that is difficult to donn
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QUESTION: Which muscle does not assist in glenohumeral extension - ANSWER-Pectoralis Major
QUESTION: The elastic portion of the anterior suspension strap on a trans-humeral prosthesis -
ANSWER-Allow the elbow lock to function
QUESTION: Which muscle does not assist in elevation of the scapula - ANSWER-Pectoralis Minor
QUESTION: The use of step-up hinges - ANSWER-Increases patient's functional range
QUESTION: Which prosthetic elbow requires the split control cable? - ANSWER-Outside locking
hinge, Geared Step-up hinge, Stump Activated locking hinge
QUESTION: Which muscle is both a primary elbow flexor and a supinator - ANSWER-Bicep
The correct location of the cross point on a standard trans-radial figure of 8 prosthetic harness is
- ANSWER-Inferior to C7 toward sound side
QUESTION: What age is best to fit a child with an upper limb deficiency at birth? - ANSWER-As
early as 3 months
QUESTION: Which muscle's primary responsibility is for scapular abduction - ANSWER-Serratus
Anterior
QUESTION: Shoulder Flexion is initiated by the muscles below except: - ANSWER-Serratus
Anterior
QUESTION: Sewn cross point harnesses rathe than a ring type cross point is done to: -
ANSWERIncrease excursion response
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