Wheelchair lecture

Question 1

what are the pros to a folding frame

Answer 1

shock absorption
smoother ride
more flexible
easy to transfer

Question 2

what are the cons to a folding frame

Answer 2

heavier

greater maintenance

Question 3

what are the pros to a rigid frame?

Answer 3

less maintenance
lighter 
stronger
easy to propel 
fewer movable parts

Question 4

what are the cons to a rigid frame?

Answer 4

decreased shock absorption
difficult to get in car
uncomfortable ride

Question 5

what type of frame are sports chairs?

Answer 5

active duty light weight

Question 6

name the material of frames from heaviest to lightest.

Answer 6

steel, aluminum, titanium

Question 7

what is the tradeoff for a high back?

Answer 7

less mobility

Question 8

for a more active individual, should you have a high or low back?

Answer 8

low back

Question 9

what type of support does back upholstery give? does it interfere with the folding of the chair?

Answer 9

moderate support

no

Question 10

what is one negative side and one positive side to wrap around armrests?

Answer 10

reduces the width of the chair

easier manuevarability

Question 11

what are the positives to the full length armrest?

Answer 11

larger surface for pushup transfers

space for upper extremity support surface

Question 12

who would benefit from height adjustable armrests?

Answer 12

kids

useful for people who need more or less support throughout the day

Question 13

features of a rigid leg rest.

Answer 13

decreases propulsion

gets in the way when performing a transfer

Question 14

features of a folding frame leg rest.

Answer 14

removable

you can specify the angle

Question 15

what is the negative side of placing the axle in the front.

Answer 15

it shifts the COM posterior and can cause tipping

Question 16

difference between spokes and mags.

Answer 16

spokes: increased shock absorption, lighter, more maintenance
mags: less shock absorption, heavier, less maintenance

Question 17

difference between solid and pneumatic tires.

Answer 17

solid tires: decreased traction, decreased shock abosrption, decreased maintenance
pneumatic tires: increased traction, increased shock absorption, more risk for flat tires

Question 18

difference between large and small castors.

Answer 18

large castors: larger turning radius, more effort to start moving, smoother ride
small castors: smaller turning radius, less effort to start moving, harder to maneuver over obstacles

Question 19

someone with a C5 injury will utilize what type of brake?

Answer 19

pull brake

Question 20

which patients get a head/neck support? what does it allow for?

Answer 20

patients with a fair, poor, or absent head control

increased resp, swallowing/feeding, increased safety, promotes neutral cervical spine, visual interaction

Question 21

what are the negatives to a head/neck support?

Answer 21

skin problems

Question 22

what are lateral trunk supports indicated for?

Answer 22

weak and spastic muscles

Question 23

what do lateral trunk supports allow for?

Answer 23

increased postural alignment, pelvic alignment, controls lateral trunk flexion, respiration, swallowing, increases weight of chair and interferes with self propulsion

Question 24

what may interfere with transfers if fixed?

Answer 24

lateral hip guides

Question 25

the push cycle is what percent of the propulsion cycle?

Answer 25

25-35%

Question 26

discuss the effects of seat height on push phase.

Answer 26

lower the seat height, less stroke frequency, longer stroke, greater rim contact and greater mechanical efficiency

Question 27

name the 3 phases of the push phase.

Answer 27

forephase
midphase
after phase

Question 28

where is the greatest force generated during the push phase?

Answer 28

after phase

Question 29

What are cushions effected by?

Answer 29

environment
amount of use
activity level

Question 30

pros and cons of foam cushions.

Answer 30

pros: good postural support, cheap, low maintenance, lightweight
cons: not moisture resistant, doesn’t insulate, short lifespan

Question 31

pros and cons of gel cushions.

Answer 31

pros: even weight distribution, allows for heat exchange
cons: heavier, may rupture, expensive

Question 32

pros and cons of honeycomb cushions.

Answer 32

pros: good postural support and weight distribution, washable, moisture and heat control, reduced shear forces (think of transfer board)
cons: compresses over time

Question 33

pros and cons of air cushions.

Answer 33

pros: even pressure distribution, waterproof, lightweight, washable
Cons: maintenance, cost, less postural support, leak