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Board Prep- Prosthetics Written and Written Sim > Sample Test #1 > Flashcards

Sample Test #1 Flashcards

1
Q

All of the following factors contribute to vaulting with a AK prosthesis except:

a) Prosthesis is too long
b) Excessive Knee Friction
c) Inadequate Suspension
d) Weak Hip Extensors

A

d) Weak Hip Extensors

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2
Q

The Gluteus Medius is most active during which phase of gait?

A

Initial Contact

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3
Q

What is a characteristic of a constant friction knee?

A

reduces “heel rise” and terminal impact at normal cadance

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4
Q

The toe of an AK prosthesis rotates externally at IC, what is a major cause?

A

PF resistance is too firm

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5
Q

A sac filled with heavy fluid that lies between and boney prominence is called:

A

Bursa

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6
Q

A lack of total contact in a PTB limb can cause:

A

Distal Edema

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7
Q

The A-P Measurement of a Bk amputee is taken at what degree of flexion?

A

15

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8
Q

To check height of the prosthesis the amputee should:

A

Support their weight equally on both legs

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9
Q

When walking, the normal foot should pass close to the AK prosthetic foot:

A

To facilitate shift of body weight

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10
Q

Rotation of the foot at heel strike may be caused by

A

A stiff plantar flexion bumper

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11
Q

If the Ischial Tuberoscity is placed too far toward the medial side of the ischial seat , it results in:

A

Crowding of the adductor muscles into small area, causing burning sensation

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12
Q

The knee bolt of a prosthesis is normally found to be:

A

In 5 degrees of external rotation

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13
Q

When the adductor longus tightness is observed during initial fitting of the AK socket you should:

A

Flare and contour anterior-medial corner

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14
Q

When AK amputee has to arch back in order to maintain COG

A

Socket was fit without enough initial flexion

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15
Q

As the AK amputee places their weight on the prosthesis the femur presses towards the lateral wall. Because of this the lateral wall should be :

A

Adducted to stabilize the femur during locomotion

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16
Q

The suction socket prosthesis is aligned so the involuntary alignment stability is minimized and voluntary knee control by stump action is emphasized

A

In order that a minimum amount of energy is consumed during walking

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17
Q

If a force of 10lbs is exerted on a 5 foot arm of a lever, what force must be exerted on the 2 foot arm to balance it?

A

25 lbs

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18
Q

In TF, medial whip is caused by

A

Excessive lateral rotation of knee bolt

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19
Q

In correction of a abducted socket we should:

A

Release the medial tilt screw and tighten the lateral

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20
Q

When pulling the amputee into the AK socket the most important anatomical landmark is the:

A

Adductor Longus tendon

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21
Q

When harnessing bilateral amputees , the harness should be

A

Centered over the vertebral column

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22
Q

The FM wrist disconnect is not recommended for use on:

A

Shoulder Disarticulation amputees.

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23
Q

The triceps pad is often used with:

A

Medium and short BE, Short and very short BE

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24
Q

The polycentric hinge is used on which type of amputee:

A

Short below elbow

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25
Q

The acromion is part of the:

A

Scapula

26
Q

The basic BE control motion is gleno-humeral :

A

Flexion

27
Q

The acceptable range of gleno-humeral flexion for AE prosthesis application is:

A

90 degrees

28
Q

Pronounced terminal impact of a prosthetic knee indicates a need for:

A

More extension dampening controls

29
Q

If the ML of the socket is too large: (AK)

A

Ischial tuberoscity will fall into the socket

30
Q

What is the result of locating the toe break too far forward in the prosthetic foot

A

Gives amputee feeling of climbing a hill , causing excess energy consumption.

31
Q

When hamstring muscles are tight at initial fitting of AK socket, what should yo do?

A

Relieve lateral border of scarpas Triangle

32
Q

The force applied to open the terminal device of a BE prosthesis is 7 lbs. How many pounds of force applied at the harness would provide acceptable efficiency?

A

10 lbs

33
Q

When a VO hand is opened, it is replaceing function normally provided by?

A

Extensor digitorium communis and lumbricals

34
Q

All of the following prehension patterns are provided by prosthetic hands except:

a) Cylindrical
b) Spherical
c) Palmar
d) Lateral

A

d) Lateral

35
Q

The main supinator of the forearm is:

A

Biceps

36
Q

What are friction wrists?

A

WE-500 WA-600

37
Q

T/F The brachioradialis assists in flexion of the elbow

A

True

38
Q

T/F The radius rotates around the ulna?

A

True

39
Q

T/F In the stable anatomical elbow, the only motion that occurs between the forearm and the humerus is flexion and extension

A

False

40
Q

Glenohumeral abduction is performed primarily by the deltoid muscle

A

True

41
Q

T/F Triple control simply means there is one cable for elbow flexion, one cable for terminal device operation, and a third for elbow locking

A

True

42
Q

The length of the AE humeral section is determined by measuring the sound side from the:

A

acromion process to the lateral epicondyle

43
Q

Where should the cross point for a figure 8 harness be located in relation to the 7th cervical vertebrae?

A

inferior and toward the sound side

44
Q

The brachioradialis is the primary:

A

Elbow flexor

45
Q

During dynamic alignment of an AK prosthesis, the patients trunk bends laterally toward the amputated side . This indicates what problem?

A

The foot is positioned too far laterally

46
Q

The Knee Disarticulation offers what features when compared to TF:

A

Distal End Bearing, Better Rotational Control, More functioning muscle intact.

47
Q

What adductor muscle is always transected in a knee disaticulation amputation?

A

Gracillis

48
Q

Myoplasty is ?

A

Surgery where the muscles are sewn together

49
Q

Two main functions of BK cuff suspension?

A

Prevents Rotation, Suspends Prosthesis

50
Q

In order to flex the elbow, the TH amputee with a Fig 8 harness must:

A

Unlocks the elbow and flexes GH joint

51
Q

The amount of humeral flexion required to fully flex the elbow of a TH prosthesis should not exceed:

A

45 degrees

52
Q

The shoulder disarticulation prosthesis is operated primarily by what control motion?

A

Scapular Abduction

53
Q

The PF bumper simulates what muscles?

A

Tibialis Anterior

54
Q

What are advantages of multi-axial ankles?

A

Absorbs Torque, Accomodates uneven ground, Minimizes shear forces on skin

55
Q

What are advantages of joint and corset prosthetic socket design?

A

Enhanced ML Stability
Better Knee Extension Stop
Greater Weightbearing Distribution

56
Q

During normal human locomotion, the primary function of the gluteus medias is to:

A

Maintain lateral stability of the pelvis.

57
Q

What are advantages of SCSP prosthetic socket design?

A

Enhances ML Stability
Positive Knee Extension Stop
Less pistoning during swing phase
A self-supending prosthesis

58
Q

A BE prosthesis with flexible hinges should not inhibit flexion at the elbow more than:

A

10 degrees

59
Q

The primary advantage of VC terminal device is:

A

Graded Prehension

60
Q

What wrist unit provides the greatest ROM for a bilateral BE Amputee?

A

Wrist Flexion Unit

61
Q

What modification is made to the Fig 8 harness for the bilateral BE amputee?

A

The axilla loops are unecessary

Board Prep- Prosthetics Written and Written Sim (2 decks)

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