Intro to Orthotics (4) Flashcards
articulated AFOs
traditional and plastic
plastic orthosis
cut non-articulated at ankle
add ankle joint
what does an articulated AFO utilize
foot plate
ankle joint
what could the ankle joint be made out of
metal
plastic
metal
heavier
more durable
plastic
lighter
less durable
articulated AFO is
AFO w/ an ankle joint
general description of an articulated AFO
closure/strp
calf shell/metal uprights
metal/plastic ankle joint
foot plate or shoe attachment
foot plate
3/4
full
sulcus
ankle joint axis
single
single axis
only movement in sagittal plane
sagittal plane control
always limits M/L motion
what does the single axis allow/limit
DF and PF
ankle joint/static designs
limited motion
free ankle
solid ankle
limited motion –> ankle joint/static designs
allows balance and postural sway
few degrees in either direction
free ankle –> ankle joint/static designs
M/L control (single axis)
free DF/PF
solid ankle –> ankle joint/static designs
no motion in any direction
ankle joint/stops
posterior stop
anterior stop
adjustable
posterior stop
PF stop
locked at 90 degrees
no PF/free DF
posterior stop –> gait control
HS and swing
clinical use for posterior stop
CVA
neuropathy
DF weakness
posterior stop IS NOT
dynamic
anterior stop
DF stop
stopped at 90 degrees
no DF/free PF
gait control of anterior stop
MS to push off
clinical use for anterior stop
gastroc weakness
MD
knee flexion contracture
anterior stops are
rare and hard to find
adjustable stop
adjusted for various range of DF and PF
when is adjustable stop used
to correct contracture
LOM –> plane of control
sagittal
frontal
LOM –> muscle weakness
AP and ML muscles
LOM –> gait cycle
stance and swing
FREE –> plane of control
frontal
FREE –> muscle weakness
ML muscles
FREE –> gait cycle
no limitation
SOLID –> plane of control
sagittal and frontal
SOLID –> muscle weakness
AP and ML muscles
SOLID –> gait cycle
stance and swing
posterior stop –> plane of control
sagittal and frontal
posterior stop –> muscle weakness
anterior tib
posterior stop –> gait cycle
HS
swing
anterior stop –> plane of control
sagittal and frontal
anterior stop –> muscle weakness
gastroc and soleus
anterior stop –> gait cycle
end of MS
PO
adjustable stop –> plane of control
sagittal and frontal
adjustable stop –> muscle weakness
AP and ML muscles
adjustable stop –> gait cycle
stance and swing
ankle joint/dynamic control
more fxnal orthotic
decreases gait deviations
types of ankle joint/dynamic control
spring assist
double action spring assist
spring assist
DF spring assist
PF spring assist
DF spring assist allow for
controlled PF and springs back into DF
what is DF spring used for
weak DF muscles
clinical use of DF spring
CVA and neuropathy
PF spring assist
allows for controlled DF and springs back into PF
PF spring is used for
weak PF muscles
clinical use for PF spring
MD
gastroc weakness
double action spring assist
spring assist for PF and DF
double action spring assist is used for
anterior tib and gastroc weakness
generalized weakness on both sides of the ankle
DF spring assist –> POC
sagittal and frontal
DF spring assist –> muscle weakness
anterior tib
DF spring assist –> gait cycle
HS
swing
PF spring assist –> POC
sagittal and frontal
PF spring assist –> muscle weakness
gastroc and soleus
PF spring assist –> gait cycle
mid stance
PO
double spring assist –> POC
sagittal and frontal
double spring assist –> muscle weakness
anterior tib
gastroc and soleus
double spring assist –> gait cycle
stance and swing
what could we do with different ankle joints and stops or controls
combine them
combining
depends on weakness
joint instability
muscle tone variations
fxn of AFO w/ posterior stop
used for DF weakness
prevents excessive PL
not dynamic
corrects foot drop
AFO w/ DF assist spring assembly –> used for
DF weakness
assists movement into DF
correct foot drop
AFO w/ DF assist spring assembly –> prevents
excessive PF
AFO w/ DF assist spring assembly –> similar to
leaf spring
DAAJ AFO
double adjustable AJ
DAAJ AFO fxn
for DF and PF weakness
has other variations
SMO
supra malleolar orthosis
dynamic O design
trim line is just above the malleoli
always high M-L
dynamic O controls (potentially)
ML
PF
DF
what is control determined by –> SMO
trim line
what could an SMO be used to tx
excessive pronation associated w/ hypotonia
child w/ drop foot, varus/valgus instability d/t CP
transverse myelitis
adults w/ CVA or progressive flat feet
what are SMO concluded to be more effective w/
producing postural stability
what did SMO show improvement in
static and dynamic balance