- flat cushion
- ex: sitting on a table
- ischial tuberosities push through tissues of butt, bony prominences of butt press on hard surface, displaces tissue, cuts off blood supply, reduces oxidation and leads to necrosis
planar
t/f - it’s okay for people to sit in planar cushions for a short amount of time
true
- curved cushion
- having a well gives ischial tuberosities space to go
- takes away the pressure and allows a more even distibution of pressure
contoured cushion
regarding a cushion, ___ isn’t necessarily better.
softer
name a negative of not using a backrest.
upholstery is usually built with a sag/hammock in it, so person could collapse in it
where should the back height of a w/c be cut below in order for them to propel themselves with w/c?
inferior angle of scapula
why is cutting the back height of a w/c below the inferior angle of the scapula a good idea?
allows person to bring arms back and push wheels on w/c
as soon as you put a back rest on a w/c it moves depth ___.
shorter
name 3 types of patients who would need lateral supports.
- scoliosis
- lateral flexion
- anything that takes them out of midline position
what is the first part of the body that should be considered and prioritized regarding seating and positioning?
pelvis
if someone has a bend in their spine, where would the pads of the lateral support go?
3 points of control - high, low - concave, convex - where apex of curve is
why are there 3 points of control needed as lateral supports to fix a bend in the spine?
need counter action on other side (not just on one side)
- helps hold pt. up
- sometimes not possible on women due to breasts
- if you’re not stabilizing the hips and person loses pelvis position and collapses and slides down, chest strap
chest straps/harness
what do lap boards prevent arms from doing?
falling into internal rotation and flexion
describe optimal pelvic positioning support (seat belt) .
- better to be further forward - belt should be on femur, should be perpendicular to femur itself, just anterior to ASIS of pelvis
- prevents pelvis from sliding forward, allows pelvis to flex
don’t use ___ to prevent someone from sliding onto floor.
abductor
what is the point of a headrest?
to hold the head in midline with no lateral flexion or rotation to either side
hard tires are great on which surfaces?
smooth surfaces but on bumpy surfaces you can feel every single bump and causes a thud on vertebrae causing back pain or nerve damage
soft tires are great on which surfaces?
bumpy surfaces and obstacles
springs that attach to casters which take the shock of the casters and make it a smoother ride
frog legs
