final components Flashcards
artificial replacement of body part
prosthesis
time periods of prosthesis
temporary (within year)
definitive
What are the components of transtibial and transferal prostheses
shank/pylon
socket
suspension
Description of K0-
K0: Non ambulatory K1:Limited household ambulation K2:Limited community ambulation K3:independent community/leisure ambulation K4: High level activity.
Conventional feet are
not very mobile K0-1
3 kinds of conventional feet
SACH foot
SAFE Foot
Single axis
long lever=
short lever=
less stability more energy return
More stability less energy return
What are some dynamic response feet?
non-articulated short/long lever articulated long keel polycentric hydraulic ankle torsion absorbtion running
What is the purpose of a split keel?
reaction to different surfaces
Hydraulics controls
PF from initial contact thru LR
How is energy stored in hydraulic ankle?
when pylon DF over foot during stance
What does torsional absorbtion foot do?
whats this good for?
translates rotational force through foot
golf softball
pylons can be
endoskeletal
exoskeletal
Characteristics of pylon
transfer weight
Shockabsorber
can add rotator
restore length
Characteristics of socket
provide total contact
Counter-pressure for venous control
sensory feedback
Materials and methods of making socket
Casting vs CAD-CAM
Thermoset (resin)vs thermoplastic.
What are WB areas of patellar tendon bearing prosthesis??
patellar tendon
Gastroc
Pretibial muscles
Tibia& fibular shaft.
Most sockets for transtibial used with
what does it do
silicone liner
provides cushion
Where is there pressure in socket for transfemoral?
ischial tub
glutes
Ramus
side of thigh
Where should u avoid pressure for transferal Prosthesis
pubic symphysis
perineum
adductor longus tendon
Transferal prosthesis set in
slight flexion (5 deg) and adduction (7 deg)
Quadrilateral transferal socket has WB on?
why is ant wall higher?
what is limiting in it?
ischemic tub
counter-pressure
M-L/rotational stability
WB on ischial containment socket?
what is improved?
ischium and ascending ramus
M-L rotational stability secondary to high lateral wall
Types of transferal sockets?
quadrilateral
ischial containment
contoured ischial containment
What does contoured ischial containment socket do
contour for hammys and adductors to allow for muscle enlargement
What are the suspensions of transtibial prostheses
Supracondylar cuff Neoprene sleeve Shuttlelock + Pin supracondylar wedge thigh corset
Suspensions for transferal prostheses
total suction
shuttlecock + Pin
partial suction (sock and band)
no suction (use bands)
What are the knee units of transferal prostheses?
possible components?
single axis or polycentric
mechanical stabilizer
microprocessor
extension aid
Align knee posterior to TKA line, manual lock, friction brake
mechanical stabilizer
What is contstant vs fluid friction
constant: swing value
fluid: hydraulic or pneumatic
Types of socks/sheaths?
cotton
wool
nylon
silicone
when should u use smaller socket?
after 7 ply
Removable medial or posterior compartment to accommodate bulbous distal end?
syme prosthesis
types of UE prostheses
body powered (harness+Cable)
Externally powered (myoelectic)
Components of UE prosthesis
terminal device Wrist unit elbow unit Socket harness
types of terminal devices for UE prostheses
passive hand
myoelectric hand
hook
tool
Scap abd (protraction) w/ humeral flexion as allows for
terminal device open/close
Scap depression w/ humeral ext + abd=
lock/unlock elbow
Wrist flexor contraction =
extensors=
close hand
open hand
use an inclinometer to measure tibial angle in relation to ground and an accelerator to measure velocity
Walk aide
uses heel switch to detect weighting/unweighting
bioness
between walk aide and bioness, which adjusts to cadence?
Walk aide
what are the neural prostheses
walk aide
bioness
between walk aide and bioness, which stimulate peroneal nerve to elicit DF?
BOF
replacement or enhancement of organs or other body parts by mechanical versions
Bionics
