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Module Group 3

MG3

MG3

343
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Set of flashcards Details

Flashcards 343
Language English
Category Medical
Level University
Created / Updated 07.12.2020 / 15.01.2021
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Why do wheelchairs for lower limb amputees have their rear wheels set back

To extend the wheelbase and so regain the rearwards stability which is compromised by their displaced centre of gravity

What are the advantages of the wheelie position?

It gives more manoeurability, it allows obstacle climbing, it allows a change of sitting position
What type of wheelchair user might not require a wheelchair with brakes?

An active wheelchair user

Why is brake effectiveness often dependent on tyre pressure?

Brakes normaly operate on to tyres. If the tyres are flat the break pads cannot apply sufficient force to the tyres to achieve a braking effect.

Why are castors an important influence on manoeuvrability?

Because any change in direction requires a corresponding change in castor orientation.

How dies driving wheel alignment affect rolling resistance?

Increases rolong resistance
What are tipping levers used for?

Used by attendant to tip the wheelchair rearwards in order to climb obstacles

Which type of wheelchair is sometimes fitted with kerb climbers?

Powered wheelchairs

What are the main benefit of quickly detachable driving wheels?

Reducing the weight and size for transportation

List the three types of strenght that must be considered in wheelchair design

static, impact, fatigue
What are the advantages of the typical sling seat design used in most wheelchairs?

Lightweight, permits folding

List six groups that often require special seating and body support

The elderly, cerebral palsy, spinal cord injury, rheimatoid arthritis, muscular dystrophy, multiple sclerosis

Do all those requiring special seating and body support rely on wheelchairs for mobility?

No effective orthotic measures exit.

Which physical characteristics of a user are important?

Size and shape
In what way must abdominal function be considered?

Respiration and digestion

What non-functional and non-physiological factors may influence the acceptance of a seat by a user

Comfort and cosmesis

List the two categories of support elements

Sagittal support elements and lateral support elements

What is the correct positioning of knee blocks?

over the distal end of the femur and patella
What are shoulder and chest harnesses used for?

To prevent excessive forward flexion of the trunk

How might the arms be prevented from falling outside the width of a wheelchair?

Using armrests that have a vertical element on the lateral side

What is another name für adduction blocks?

Pommels

List the five ways in which the overall configuration of a seat can be varied

AP tilt, recline, lateral tilt, height, dimensions
Is there an ideal angle of AP tilt for each individual?

No

What factors must be compromised when setting the level of tilit?

Maintaining a level pelvis and balancing the centre of gravity of the head of the trunk over the average centre-line of the spine

Is the ease of standing up increased or decrased with increasing seat height

Increased

List the four types of seat in order of reducing specialist construction needed by the provider

Customised, modular, adjustable, fixed format

Do the armrests of fixed format seats provide much lateral support?

Provide little lateral support

What has limited the application of the Balans type chair in the disabled population?

Difficulty of getting in and out

What are the two most common adjustable features of adjustable seats?

Legrest distances and backrest angle

What are the advantages of modular seats?

versatility without excessive complexity; avoids the expensive fabrication

What do the frameworks of modular seats usually consist of?

metal tubing; plastic shell

What are the disadvantages of customised seating?

Expensive, limites life, tend to fix the user into a single posture

Which type of customised seating does not normally require covering?

moulded plastic

Which is the most versatile type of customised seating?

foam and wood

What elements should the multidisciplinary assesment include?

Medical, physical, functional and technical elements

What is the primary source of knowledge in prescription?

Practical experience

Briefly explain what is meant by a "simulator" and what it is used for.

A seating device that is sufficiently adjustable to simulate a range of seating configurations.

Why is polyurethane foam upholstered?

Cosmesis and comfort

If a special seat is added to a wheelchair, what must be checked?

The stability, The adjustment, The fitting

What is normally the maximum time between reviews?

Not more than 12 Months

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