LE Orthosis

Question 2

What do static AFOs do?

Answer 2

Assist with swing clearance
position foot for initial contact
external stability for ankle and knee during stance

rockers of gait are compromised

Question 3

What are the types of static AFOs?

Answer 3

Solid AFO
Floor reaction AFO

Question 4

What are indications for solid AFOs?

Answer 4

complete immobilization for stabilization
moderate to severe hypertonicity or low tone
significant ankle instability and weakness

Question 5

Relative contraindications for solid AFOs

Answer 5

weak knee extensors-this brace may not be enough support

Question 6

Indications for Floor Reaction AFO

Answer 6

crouch gait
weak quadriceps

slightly plantarflexed position with anterior shell

Question 7

Floor reaction AFO contraindications

Answer 7

knee flexion contracture more than 10 degrees
genu recurvatum or structural instability

Question 8

What do dynamic AFOs do?

Answer 8

allow sagittal plane motion at the ankle
allows for rockers of gait

Question 9

What are the dynamic AFOs?

Answer 9

PLS
carbon fiber AFO
articulating AFO

Question 10

PLS and Carbon fiber indications/contraindications

Answer 10

Indications: DF weakness
Contra: spasticity and med/lat instability

Question 11

Articulating AFO requires at least _____________.

Answer 11

5 degrees of DF

Question 12

Indications for articulating AFO

Answer 12

DF/PF weakness
knee instability

Question 13

Contraindications for articulating AFO

Answer 13

severe spasticity (proceed with caution)
weak knee extensors
no active DF (precaution)

Question 14

A static brace in 5 degrees of DF limits _____________.

Answer 14

knee hyperextension by decreasing the extensor moment at the knee

Question 15

A static brace in 5 degree of PF decreases _____________.

Answer 15

flexion moment-stabilizes knee in midstance

Question 16

What does a PF stop do at the knee?

Answer 16

decreases knee hyperextension at midstance