AFO Flashcards

1
Q

components of AFO

A

foundation

ankle control

foot control

superstructure

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2
Q

discuss foundations in AFO

A

metal or plastic

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3
Q

dsicuss insert or foot plate

A

adv:
- good control of foot
- shoe can be sep from brace
- permits changing shoes
- light weight

dis:
- reduces interior shoe volume
- more expensive

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4
Q

discuss stirrups

A

forms structure of AFO - U shaped and attached to shank

arms join brace uprights at ankle = congruency bet orthosis and joint

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5
Q

types of ankle control

A

posterior leaf spring

klenzak or DF spring assist

PF resistance

DF resistance

solid AFO

bichannel adjustable ankle locks

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6
Q

discuss posterior leaf spring

A

DF assist - holds foot to 90°

for pt c DF weakness or foot drop

no medial/lat stability

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7
Q

discuss klenzak joint

A

coil spring compresses in stance then rebound during swing

DF assist

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8
Q

discuss PF resistance

A

post stop

imposes flexion force at knee during early stance

prevent lax knee from hyper ex or buckling

only allows ~5° PF = knee extension = controls unstable knee

too much PF = recurvatum

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9
Q

discuss DF resistance

A

anterior stop

for pt c paralysis of triceps surae to achieve late stance

only allows ~5° DF = knee flexion = controls knee hyperextension

too much DF = buckling

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10
Q

discuss solid AFO

A

limits all foot and ankle motion - hemiplegia and spastic diplegia

trimline is ant to malleoli

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11
Q

discuss Bi CAAL

A

can either reduce or assist motion

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12
Q

discuss foot control

A

medial T strap: valgus correction
- on medial portion of shoe upper
- exerts laterally directed force to restrain pronation

lateral T strap: varus correction
- lat malleoli going medially
- corrects supination

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13
Q

discuss superstructure

A

proximal portion

weight relieving - consist of upright and shell, band or brim

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14
Q

discuss spiral AFO

A

winds around calf

controls but does not eliminate motion in all planes

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15
Q

discuss patellar tendon bearing brim

A

reduces amount of weight transmitted through foot

resembles transtibial prosthetic socket

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16
Q

discuss tone reducing orthosis

A

plastic - for children c spastic CP and adults c spastic hemiplegia

foot plate and broad upright modify reflex tonicity by applying constant pressure to PF and invertors

moderate spasticity only c varus instab and not fixed

prevents equinovarus