Hip, Knee, and Ankle Disarticulation

Question 1

What is key with disarticulations

Answer 1

Distal end bearing

Question 2

How is hip casting done

Answer 2

In standing and you use wood and foam to provide a counter balance

Question 3

True or False:

A total contact suction socket is not often seen with a hip disarticulation

Answer 3

True

Question 4

Why is a total contact suction socket not seen often with a hip disarticulation (2)

Answer 4

1. It is hard to do

2. During the swing phase of gait the prosthesis wants to pull off of the body

Question 5

What is a benefit of hip disarticulation flexible silicone socket

Answer 5

Componentry is able to be lined up properly like a normal leg is

Question 6

How does a patient with a hip disarticulation ambulate

Answer 6

By sitting down into the socket to get knee flexion needed for walking

Question 7

True or False:

99% of the time hip disarticulation prostheses will be endoskeletal

Answer 7

True

Question 8

What are issues with the prosthesis of a patient with a hip disarticulation (4)

Answer 8

1. Prosthetic foot
2. Alignment
3. Weight
4. Cosmesis

Question 9

What is a translumbar amputation

Answer 9

From the waist down is removed

Question 10

Do knee disarticulation prostheses have a quadrilateral or ischial containment socket

Answer 10

Nope

Question 11

What don’t knee disarticulation prostheses not have a quadrilateral or ischial containment socket

Answer 11

Due to the longer residual limb and being able to grab lots of the thigh for fitting

Question 12

What does not having a quadrilateral or ischial containment socket afford the patient

Answer 12

There is nothing in the groin area

Question 13

What type of knee joint do the prosthetics for knee disarticulations have

Answer 13

Polycentric knee that collapse right below prosthesis

Question 14

Does someone with a syme’s amputation have the ability to do distal end weight bearing

Answer 14

True

Question 15

What type of socket does a person with a syme’s amputation receive (3)

Answer 15

1. Canadian style posterior opening
2. Socket VAPC medial opening
3. Expandable wall socket

Question 16

True or False:

With a syme’s amputation the distal circumference is much larger than proximal circumference

Answer 16

True

Question 17

Why is the distal circumference of the syme’s amputation larger than proximal

Answer 17

Due to the malleoli

Question 18

True or False:

The expandable wall socket is hard to make

Answer 18

True

Question 19

How does the expandable wall socket work

Answer 19

Residual limb is placed in socket and then the bladder is inflated holding limb in place

Question 20

What are the issues with a syme’s amputation (3)

Answer 20

1. Prosthetic foot
2. Alignment
3. Cosmesis

Question 21

True or False:

For partial foot amputations a rocker sole is commonly used

Answer 21

True

Question 22

What are modifications that can be made to the shoe for a patient with a partial foot amputation (6)

Answer 22

1. Extra depth
2. Soft upper (soft top)
3. Length (half inch longer than longest toe
4. Firm heel counter (so back doesn’t crush)
5. Heel low and broad (provides stability)
6. Insole should be resilient