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Mock Prosthetic Written Missed Questions and Answers 100% Verified
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Mock Prosthetic Written Missed
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Mock Prosthetic Written MissedIf the ischial tuberosity is placed too far toward the medial side of the ischial seat, it
results in:
-crowding of adductor muscles into smaller area, causing burning sensation
-too much weight being borne on the ramus of the ischium
-wedging of stump in the gluteus channel
-walking with leg internally rotated - answercrowding of adductor muscles into smaller
area, causing burning sensation
the knee bolt of the prosthesis is usually found to be
-perpendicular to the line of progression
-in approximately 5 degrees internal rotation
-in approximately 5 degrees external rotation
-in approximately 8 degrees external rotation - answerin approximately 5 degrees
external rotation
The suction socket prosthesis is aligned so that the involuntary alignment stability is
minimized and voluntary knee control by stump action is emphasized:
-in order that a minimum amount of energy is consumed during walking
-to provide valuable exercise for stump muscles
-to make it possible to use a simplified knee mechanism
-in order that the cosmetic appearance of the limb is improved - answerin order that a
minimum amount of energy is consumed during walking
medial whip is caused by:
-improper placwment of the toe break
-external rotation of the ankle axis
-medial rotation of knee bolt
-excessive lateral rotation of knee bolt - answerexcessive lateral rotation of knee bolt
if the ischial seat of the AK socket is made too wide, it will cause:
-painful spasm of the gluteus maximus
-excessive pressure on the hamstring muscles, resulting in stump edema
-burning sensation when the wearer is seated, because of excessive stretching of the
skin.
-excessive adductor bulge because of insufficient room in the medial posterior area of
socket - answerexcessive adductor bulge because of insufficient room in the medial
posterior area of socket
Which one of the following gait faults is due to incorrect function of the prosthesis?
,-circumduction
-pelvic rise
-unequal arm swing
-unequal step length - answerunequal step length
if the medial/lateral dimension of the socket is too large:
-the ischial tuberosity protrudes over the posterior aspect of the socket
-the ischial tuberosity falls into the socket
-the amputee complains of tightness over the trochanter
-the ischial tuberosity will move laterally on the seat - answerthe ischial tuberosity falls
into the socket
amputee jones' weight of 200 lbs. is assumed to be concentrated at his center of
gravity. The effective length of the lever arm between his center of gravity and the
support point on his socket is six inches. The effective length of the lever arm from the
support point to the midpoint of his femur is ten inches. How many inch-pounds of force
must be distributed on his femur to prvent mediolateral innstability?
-120
-600
-1200
-850 - answer120
To determine the control system efficiency of an upper extremity prosthesis:
-divide the force measured at the hanger by the force at the TD
-deivide the force at the TD by the force at the hanger
-divide the amount of force necessary to dispace the socket axially 1/2" by the force
needed to flex the elbow
-multiply the force measured at the hanger (9.0 lbs., for instance) times 100% to get
90% efficiency - answerdivide the force measured at the hanger by the force at the TD
The maximum pinch force of the two load hook is:
-4 lbs.
-equal to the number of rubber bands on the TD
-7 lbs.
-varies from an avg. of 3 lbs. to 15 lbs. - answer7 lbs.
The latissimus dorsi and the supraspinatus are the prime moves in glenohumeral
extension:
-T or F - answerFalse
The below elbow arm is generally suspended by
-an inverted Y strap
-a shoulder saddle
-the prehension control cable
-an inverted Y strap and prehension control cable combined - answerAn inverted Y
strap
, The deltoid provides:
-humeral abduction, flex, and ext.
-humeral adduction, flex, and ext.
-humeral abduction, int. and ext. rotation
-humeral adduction, int. and ext. rotation - answerhumeral abduction, int. and ext.
rotation
The triceps muscle:
-not only extends the elbow joint but also adducts the glenohumeral joint
-only extends the elbow joint
-flexes and extends the shoulder joint
-none - answernone
In amputation surgery of the UE:
-As little length as possible is desirable for the best lever arm advantages
-medium length stumps are always the best
-all upper extremity amputees should be below the elbow as a rule
-as much length as possible should be retained - answeras much length as possible
should be retained
In the medium length BE there can be some residual pronation because the:
-biceps brachii remains intact
-brachialis remains intact
-pronator teres is still largely intact
-pronator quadratus is wholly intact and thus provides the desired action -
answerpronator teres is still largely intact
The amount of humeral flexion required to fully flex the elbow of an AE prosthesis
should not exceed:
-20
45
90
135 - answer45
The shoulder disarticulation prosthesis is operated primarily by what control motion?
-humeral flexion
-scapular abduction
-shoulder depression
-scapular adducxiton - answerscapular abduction
Which one of the following normal functions can be mechanically reproduced in a
prosthetic arm?
-shock absorbing
-tactile sensation
-feed back
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