AFO 4

Question 1

When would it be beneficial to use a DF assist/PF stop metal upright?

Answer 1

flexibility

• allows for pt weight gain
• weeping venous ulcers

can still use same AFO

Question 2

How is motion assisted/blocked with a joint?

Answer 2

• assisted when spring is compressed within the channel

- blocked when a small pin is placed in the channel

Question 3

How is the amount of DF assist increased?

Answer 3

Tightening a screw at the top of a channel compresses a spring further for more assistence

Question 4

Klenzak =

Answer 4

single action

Question 5

Klenzak channel

Answer 5

• channel is at an angle

- rods lock patient with small amt of DF

Question 6

Klenzak: pt gets better

Answer 6

• add spring
• allows movement but yields DF
• spring recoils » pressure goes downward » foot goes up

Question 7

What is a BiCAAL?

Answer 7

Bichannel adjustable ankle joint (double action or double Klenzak joint)

Question 8

BiCAAL: Where is the spring?

Answer 8

posterior chamber

Question 9

Why is the spring posterior in the BiCAAL?

Answer 9

• acts like a see-saw

- if you load the heel portion, the toes push up

Question 10

Types of thermoplastic ankle joints used for hinged AFOs

Answer 10

• overlap
• Oklahoma
• flexible Gillette mechanism

Question 11

overlap joint

Answer 11

• 2 pieces of plastic overlap and held together by rivet

- may have big cutout for thermal contact, swelling, skin issues

Question 12

Oklahoma joint

Answer 12

• channels made in AFO
• single-axis joint
• easiest type of joint to add to that was first made solid

Question 13

What does a Gillette joint allow?

Answer 13

allows movement into DF and PF without an actual articulation

Question 14

common population that gets Gillette joint

Answer 14

peds

Question 15

Gillette joint: components, restrictions

Answer 15

• small rubber material fits in grooves with rivets
• allows free PF/DF
• provides M/L stability

Question 16

What is an FO?

Answer 16

foot orthotic AKA insert

Question 17

What is an SMO?

Answer 17

• supramalleolar orthotic

- used for low tone in conjunction with pronation and ankle instability

Question 18

Two broad types of AFOs

Answer 18

• static

- dynamic

Question 19

SAFOs are almost always:

Answer 19

solid ankle

Question 20

DAFOs can have either of these types of ankles:

Answer 20

• solid

- hinged

Question 21

What makes a DAFO dynamic?

Answer 21

• materials
• joint
• ability to change ROM and muscle action according to client’s needs