Exam 1: Prosthetic Feet Article

Question 1

Newer models of prosthetic feet are replacing heavier wood and steel materials with lightweight ____, aerospace alloys, and ____-____ composites

Answer 1

plastics; carbon fiber

Question 2

What are 6 factors that should be considered when selecting the right type of prosthetic foot

Answer 2

amputation level, age, weight, foot size, activity level and occupation

Question 3

What are the two groups of prosthetic feet

Answer 3

1. Those with a rigid connection to the prosthetic shank

2. Those with a hinged ankle mechanism

Question 4

There are two groups of prosthetic feet. The group in which those with a rigid connection to the prosthetic shank are also called (articulated/non-articulated)

Answer 4

non-articulated

Question 5

There are two groups of prosthetic feet. The group in which those with a hinged ankle mechanism are also called (articulated/non-articulated)

Answer 5

articulated

Question 6

In terms of function, prosthetic feet can be categorized in which 5 categories

Answer 6

1. SACH
2. Elastic/flexible keel
3. Single-axis
4. Multi-axis
5. Dynamic Response

Question 7

What are the two most basic types of prosthetic feet

Answer 7

SACH and elastic keel

Question 8

What type of patient are SACH and elastic keel prosthetics designed for

Answer 8

Those who do a limited amount of walking with little variation of speed

Question 9

What is the simplest type of nonarticulated foot

Answer 9

SACH

Question 10

What is the response of a SACH foot during gait. In other words, how does it aid in the function of gait

Answer 10

A rubber heel wedge compressed under load during early stance phase. The keel is rigid which provides midstance stability but little lateral movement

Question 11

Is a SACH foot available in multiple heel sizes

Answer 11

yes

Question 12

An elastic keel allows motion similar to the SACH foot. What is the biggest difference between the two

Answer 12

An elastic keel allows for the forefoot to conform to uneven terrain but still remains stiff and stable during gait

Question 13

The more axes a prosthetic has, the (more/less) mobility an ankle will have. This (helps/hurts) accommodation to uneven surfaces

Answer 13

more; helps

Question 14

What type of prosthetic would be prescribed to a patient whose primary concern is stability

Answer 14

single-axis feet

Question 15

What type of movement can occur with a single axis foot

Answer 15

DF and PF

Question 16

The (slower/quicker) the full sole of the foot is in contact with the ground, the more stable the prosthesis becomes

Answer 16

quicker

Question 17

What type of foot would be appropriate with higher levels of amputation from the knee to the hip

Answer 17

single axis feet

Question 18

Which type of prosthetic foot allows for DF and PF as well as an increased accommodations to uneven surfaces and inversion and eversion movements

Answer 18

multiaxis feet

Question 19

What type of motion would you expect to see in a multiple axis foot

Answer 19

DF/PF
inversion/eversion
increased accommodation to uneven surfaces

Question 20

What type of foot would be prescribed for hikers, golfers, dancers, and others who need significant mobility

Answer 20

multiaxis feet

Question 21

What type of prosthetic foot is ideal for people with more active lifestyles who can vary their walking speed, change direction quickly, or walk long distances

Answer 21

dynamic response

Question 22

What type of foot stores and releases energy during the walking cycle

Answer 22

dynamic response

Question 23

Some dynamic response feet have a ____ ____ design that further increases stability by mimicking the inversion and eversion axis of the human ankle

Answer 23

split toe

Question 24

If your trying to encourage a patient to advance from a minimal activity level to a moderate activity level, which foot would you prescribe

Answer 24

a dynamic response foot