Wheelchair

Question 1

Types of frames

Answer 1

Folding and rigid

Question 2

What is the Pros/Cons to folding frame?

Answer 2

Pro:
-easy transfer
-smoother ride
-shock absorption
Con: 
-Heavier
-More maintenance

Question 3

What is pro/con of rigid frame?

Answer 3

Pro:
-lighter weight 
-stronger 
-easier to propel
-less maintenance 
Con:
-difficult to transfer 
-less shock absorption
-uncomfortable

Question 4

Seatback: difference between high back and low back

Answer 4

High back:
High back=low mobility (trade off) 
Additional support throughout the spine 
Low back:
Low back=active individuals 
UE clearance to access wheels

Question 5

What is the standard seat back support ?

Answer 5

Very thin

Question 6

What are the 4 types of armrests

Answer 6

• non-removable
• wrap around armrests
• height-adjustable arm rests
• full-length arm rests

Question 7

What can you do with non-removable armrest?

Answer 7

Mainly STS. Hard to do any pivot transfers

Question 8

What is good/bad about wrap around armrest?

Answer 8

Good: reduce width of chair
Bad: restricts transferring

Question 9

What is good about full length armrests

Answer 9

Larger surface for pushups and transfers

Prevents getting closer to surface

Question 10

What is good about height adjustable armrests?

Answer 10

• good for children bc they’re growing

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

Question 11

If the axle is posterior…

Answer 11

Moves COM forward which is bad for mobility

But it decreases tipping risk

Question 12

If the axle is anterior…

Answer 12

Moves COM backward which is good because it decreases stress on joints and muscles and is easier to turn and propel. But there’s increased tipping risk.

Question 13

One patient that would benefit from having axle placed farther back

Answer 13

Amputees so they don’t tip. Their center of mass is altered because they don’t have those body parts (legs)

Question 14

What does the handrims needed depend on?

Answer 14

Strength of user
Amount of finger function
Grip strength
User’s preference

Question 15

What are the two types of wheels and what is the difference?

Answer 15

Spoke and Mag
Spoke is more shock absorbing, lighter, but increased maintenance.
Mag is less shock absorbing, heavier, but no maintenance is needed.

Question 16

Different types of tires?

Answer 16

Solid vs pneumatic
Solid: decreased traction on uneven surfaces, less shock absorption, no maintenance
Pneumatic: increased traction/resistance, more shock absorption. (Risk of flat tire)

Question 17

Difference bw large and small castors

Answer 17

Large- greater turning radius, harder to move, smoother ride

Smaller- smaller turning radius, easier to move, less smooth ride

Question 18

What do you need to consider for brakes?

Answer 18

• hand function
• balance
• reach
• transfer technique
• safety

Question 19

What are the 3 phases of propulsion cycle?

Answer 19

Push phase
Recovery phase
Transition

Question 20

Push phase

Answer 20

• 25 to 35% of cycle
• region of handrim-contact
• fore phase, mid phase, and aft phase
• aft phase has greatest force generation

Question 21

Recovery phase

Answer 21

-65 to 75% of propulsion

Question 22

Types of wheelchairs

Answer 22

Manual
Power-assist
Power