Deck 32: Prosthetics

Question 1

Your client is an elderly woman,also receiving renal dialysis,but who is otherwise a candidate for a transfemoral prosthesis prescription.Which is the following would be the least likely to benefit this individual?

A)Total suction socket
B)Temporary prosthesis
C)Socket liners and socks
D)Fluid-friction knee with braking mechanism

Answer 1

A

Question 2

Which of the following imposes the greater energy requirement during gait?

A)Vascular transtibial short limb
B)Traumatic unilateral transfemoral
C)Vascular transtibial long limb
D)Traumatic bilateral transtibial

Answer 2

A

Question 3

Which of the following is not true regarding the fluid-filled friction mechanism of a prosthetic knee unit?

A)It decreases asymmetry between the sound and prosthetic limbs.
B)Friction varies with velocity of knee movement.
C)It assists the pendulum action to swing the limb.
D)It has an internal extension aid.

Answer 3

C

Question 4

A Syme prosthesis includes

A)a foot-ankle assembly.
B)a shank.
C)a suspension component.
D)all of the above.

Question 5

An SC/SP suspension has one motion advantage (SC feature):__________________ and one functional disadvantage (SP feature):________________________ but may be the only option for this level of transtibial amputation:___________________________.

A)Flexion-extension support; difficulty fully flexing; long tibial limb
B)Flexion-extension support; difficulty fully extending; short tibial limb
C)Medial-lateral support; difficulty kneeling; long tibial limb
D)Medial-lateral support; difficulty kneeling; short tibial limb

Question 6

Circumduction is a displacement exhibited in swing phase if

A)the prosthesis is too long.
B)the patient is reluctant to bend the knee.
C)the socket is loose.
D)all of the above.

Question 7

A transtibial socket is aligned on the shank to enhance loading on the patellar ligament,prevent genu recurvatum,and facilitate quadriceps contraction; it is also aligned to reduce loading on the fibular head.What angle accomplishes the former and what angle accomplishes the latter benefit?

A)Slight flexion; slight lateral tilt
B)Slight flexion; slight medial tilt
C)Slight lateral tilt; slight flexion
D)Slight lateral tilt; slight extension

Question 8

The prosthetic knee unit has the following repair list to be done: tighten friction mechanism,replace extension bumper,tighten or replace the extension strap,and repair piston.What ambulation knee problems,in order,would be noted prior to the repairs?

A)Slowed extension,knee hyperextension,slow extension at end of swing,noise
B)Abrupt extension,knee hyperextension,slow extension at end of swing,noise
C)Slowed extension,excess knee flexion,abrupt extension,hydraulic fluid leak
D)Abrupt extension,excess knee flexion,abrupt extension,hydraulic fluid leak

Question 9

The prosthetic examination includes

A)examining the individual standing and during gait.
B)examining the prosthesis itself (off the patient).
C)A only.
D)A and B.

Question 10

In what position should the transfemoral knee bolt be located relative to a line extending from the trochanter to the ankle (TKA line)for maximal stability?

A)Exactly centered
B)More anteriorly
C)More posteriorly
D)None of the above

Question 11

Standing a transtibial prosthesis on a table for examination,the anterior socket bulge and the posterior brim should be

A)at the same level.
B)posterior brim higher.
C)posterior brim lower.
D)none of the above.

Question 12

A client may be more functional on uneven terrain if the prosthetic foot is a SAFE foot rather than traditional SACH because of its

A)articulation.
B)medial-lateral motion
C)lightness.
D)all of the above.

Question 13

Which two sides of the quadrilateral socket are higher to maintain proper support?

A)Anterior and medial
B)Anterior and posterior
C)Anterior and lateral
D)Posterior and medial

Question 14

Which of the following accurately depicts the most common cause of amputation and the age/gender affected?

A)Soft tissue tumor,elderly male
B)Trauma,young adult male
C)Trauma,young adult female
D)Bone tumor,adult male

Question 15

A frail elderly person may be fitted with a single-axis articulated foot with a soft rear bumper for all of the following reasons EXCEPT

A)it is durable.
B)it is less expensive than multiple-axis.
C)it is lighter than multiple-axis.
D)it will allow easier dorsiflexion with the soft bumper.

Question 16

Explain why an endoskeletal prosthesis may require special care as well as occasional repair.
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