Upper Px Practice Exam Flashcards

1
Q

To determine the control system efficiency of an UEP:

A

Divide the force measured at the hanger by the force at the terminal device.

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2
Q

An axial pull test on an UEP should be:

A

A force of about 50lbs and should not displace the socket more than 1 inch

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3
Q

When the arm is over head, the trapezius muscle:

A

Positions the glenoid cavity downwards

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4
Q

Primary mover in glenohumeral extension

A

Deltoid, infraspinatus, latissimus Doris, tree major, triceps brachii

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5
Q

Glenohumeral horizontal flexion is of:

A

Deltoid, pectoralis major

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6
Q

Rhomboids originate on

A

Thoracic vertebrae and insert along the scapula from the root of the spine to the inferior angle

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7
Q

External rotation of the humerus is accomplished with:

A

Infraspinatus and teres minor

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8
Q

Internal rotation of humerus is by:

A

Subscapularis, teres major, pec major

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9
Q

Triceps actions:

A

Extends elbow, extends the glenohumeral joint

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10
Q

In the medium length BE there can be some residual pronation because:

A

Pronation teres is still largely intact

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11
Q

The amount of humeral flexion to fully flex the elbow of an AE prosthesis should not exceed

A

45 degrees

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12
Q

SD operates primarily by what motion

A

Scapula abduction

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13
Q

If AE amputee is having difficulties in flexing elbow of px what can help?

A

Add a cross back strap to the harness
Move the forearm lift loop distally,
Replace steel hook with aluminum one

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14
Q

The lever type excursion ampulifier provides increased excursion at expense of:

A

Force

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15
Q

Initial socket brim for a short AE amputation would be trimmed on a line

A

One-two incessant above the acromion

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16
Q

A non-prehensile activity may be illustrated by holding a

A

Suitcase

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17
Q

When fitting a socket for a VSBE (very short?) the mechanical elbow should flex to:

A

135 degrees

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18
Q

External movable sheave type excursion ampulifier is used with what type of prosthesis

A

SD

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19
Q

When making a plaster wrap for a VSBE split socket or muenster, the elbow is flexed

A

90 degrees

20
Q

What is chief advantage of using the housing cross bar assembly

A

Reduces control cable bending, increase cable life

21
Q

The major limitation that is incurred by the SD amputee is

A

Excursion to operate px

22
Q

When using the single pivot hinge, the center of the joint is placed 1/2” above the medial superior brim of the socket, T/F?

A

False- _______

23
Q

WE-500 and WA-600 are what type wrist units

A

Friction

24
Q

The brachioradialis assists in elbow flexion, T/F?

A

True

25
Q

Triple control means?

A

One cable for elbow flexion, one for TD operation and 3rd for elbow locking

26
Q

The E-400 elbow is set in 5-10degrees of initial elbow flexion, T/F?

A

True

27
Q

The FM wrist disconnnect is not recommended for use on:

A

SD and bilateral UEP

28
Q

Polycentric hinge is used on which type of amputee

A

Short BE

29
Q

ACROMION is part of

A

Scapula

30
Q

The acceptable range of glenohumeral flexion for AE px is:

A

135 degrees

31
Q

In what position should the muscle tunnel be when assembling the control system of the biceps cineplasty?

A

At max shortening

32
Q

When the elbow is flexed to 90 the forearm can be rotated through an arc by humeral rotation.the size of this arc is?

A

110degrees

33
Q

Proximal posterior border of the VSBE socket is shaped to contain the ole crayon process, as a result:

A

Elbow can not fully extend

34
Q

Th terminal device most desirable for use with cineplasty amputees is

A

Voluntary closing

35
Q

In SD what muscle groups are suitable for myoelectric elbow control

A

Pectoralis major, and trapezius

36
Q

Internal rotation of humerus

A

Subscapularis, pec major, latissimus dorsi

37
Q

Th most prominent and highest point on the shoulder girdle is the

A

Acromion

38
Q

The elbow is flexed to 90 and a 40 lb weight is held in hand. The distance from the elbow axis to the weight is 15 in. How much force must the elbow flexors exert if their insertion is 2” from the elbow joint

A

300in/lbs

39
Q

Characteristics of shoulder saddle harness

A

Increases comfort in axial loading
Reduces pressure in axilla
Presents cosmetic difficulties for females

40
Q

Frantic & Aitkin’s classification system, complete absence of the upper limb distal to the shoulder joint is termed

A

Amelia

41
Q

Characteristics of the cross back strap

A

Increases available cable excursion
Decreases force required to operate the TD
Tends to keep the cross point from migrating
(Does not make donning and doffing more difficult)

42
Q

Which of the following epiphyses contributes most to longitudinal growth of the upper limb

A

Proximal humerus

43
Q

Elevation of scapula:

A

Trapezius

44
Q

In short AE px the trim lines are extended proximally

A

Increase rotational stability

45
Q

The AE prosthesis is designed with 10-15 degrees of elbow flexion in order to

A

Give more cosmetic appearance

46
Q

What of the following modifications would not increase function for a bileral short AE amputee:
Use a wrist flexion unit of the dominant side
Lower the elbow center to decrease the forearm length
Decrease the size of the proximal wing on the socket
Line the cable housing with teflon

A

Decrease the size of the proximal wing on the socket

47
Q

In the munenster socket the principal function of the posterior proximal brim is to limit elbow extension and

A

Provide suspension in axial loading