BK Practice Exams

Question 1

Stance phase in px side in knee extension most likely to occur?

Answer 1

IC

Question 2

The PTB cuff strap suspension strap derives its suspension over which area:

Answer 2

Proximal patella

Question 3

Lack of total contract in the PTB limb

Answer 3

Distal edema

Question 4

A/P measurement of a BK pt. Is taken in flexion at

Answer 4

15 deg

Question 5

The preferred px foot and ankle unit for the BK PTB is

Answer 5

SACH

Question 6

PHANTOM sensation is experienced by:

Answer 6

Nearly all acquired amputees

Question 7

In evaluation the unilateral lower limb amputee’s ability to utilize a prosthesis successfully, an important consideration is his:

Answer 7

Balance and coordination on crutches

Question 8

If the patient complains of prolonged anterior distal tibial discomfort probably cause is:

Answer 8

Foot too posterior

Question 9

In order to obtain optimum m/l stability of the PTB prosthesis during locomotion:

Answer 9

Observe that the socket displaces laterally not more than 1/2” during midstance phase of locomotion

Question 10

As the amputee roll over the foot in stance phase, hiss knee joint should

Answer 10

Extend slightly

Question 11

In dynamic alignment, if the knee is forced forward and knee flexion is exaggerated at heel contract, it indicates

Answer 11

Socket positioned too far anterior

Question 12

As the outset of the foot is increased in alignment a BK px pressures are increased on the following areas of the RL

Answer 12

Medial distal, proximal lateral

Question 13

When the BK amputee controls the tendency of the knee to flex after heel strike, the pressures are increased on the following aspects of the RL

Answer 13

Anterior proximal and posterior distal

Question 14

In the BK stump the peroneal nerve passes above the head of the fibula and therefore care must be exercised in fitting to avoid pressure in this area: T/F

Answer 14

False

Question 15

BK patent with knee joint flexion contracture of 15 should not be fit with the PTB limb: T/F

Answer 15

False

Question 16

Hyperextension of the knee can be decreased by moving the socket posterior in relation to the foot: T/F

Answer 16

False

Question 17

Even pressure is applied over the entire BK stump surface by a socket:

Answer 17

That is shaped to relieve hard areas

Question 18

The scarpa’s area extends laterally about 2/3 of the distance across the proximal-anterior socket. T/F

Answer 18

False

Question 19

What are the two main functions of the BK cuff suspension strap:

Answer 19

Maintain the knee in flexion and suspends px

Question 20

A BK amputee returns to your office complaining that he is stopping in mid stance and have trouble rolling over the toe. His gait and alignment were perfect at the time of delivery of the px one week ago. What could be the problem?

Answer 20

He’s changed his shoes to a lower heel height

Question 21

With a BK at mid stance where are the pressures (force) in the socket in the sagittal plane:

Answer 21

Straight down in the floor

Question 22

For a very short BK, why is a PTS advantageous?

Answer 22

Added m/l stability

Question 23

Patient’s who are converted from side joints and thigh lacer to a corset less PTB commonly exhibit what problem

Answer 23

Knee extension throughout stance phase

Question 24

Compared to a PTB with cuff suspension, the PTB SCSP socket offers all the following adv. except :
Enhanced medial lateral stability
More positive knee extension stop
More freedom for kneeling
Less piston in during swing
Self suspending px

Answer 24

More freedom for kneeling

Question 25

When the counter of the shoe fits too tightly on a SACH foot, which of the following problems can result?

Answer 25

Less compression of the heel

Question 26

Anterior stop in a single axis foot substitutes for which of the following muscles

Answer 26

Gastrocnemius

Question 27

With a PTB px, excessive knee flexion occurs after heel strike, which of the following foot and socket adjustment best corrects the problem

Answer 27

More the foot-Anterior | Socket flexion-decrease

Question 28

One reason for aligning the PTB px so that the patient’s knee is partially flexed is to:

Answer 28

Give the amputee better balance while standing

Question 29

``` Improperly located PTB studs (bar?)can cause all the following problems except: Swing phase whip Inadequate suspension Peroneal nerve impingement Difficult in sitting ```

Answer 29

Peroneal nerve impingement

Question 30

When the BK patient controls the tendency of the knee to flex after heel strike, the pressures are increased on which areas of limb?

Answer 30

Anterior distal , posterior proximal

Question 31

During dynamic alignment of a PTB px, excessive knee flexion occurs at the beginning of heel rise. Which of the following adjustments best corrects the problem?

Answer 31

Move foot anterior | Socket flexion decrease

Question 32

A long posterior flap in a BK amputation secondary to ischemia is preferred because of

Answer 32

Better blood supply

Question 33

Tendon that is readily visible in the popliteal area when the knee is flexed is that of the

Answer 33

Biceps femoris