AFO 4 Flashcards
When would it be beneficial to use a DF assist/PF stop metal upright?
flexibility
- allows for pt weight gain
- weeping venous ulcers
can still use same AFO
How is motion assisted/blocked with a joint?
- assisted when spring is compressed within the channel
- blocked when a small pin is placed in the channel
How is the amount of DF assist increased?
Tightening a screw at the top of a channel compresses a spring further for more assistence
Klenzak =
single action
Klenzak channel
- channel is at an angle
- rods lock patient with small amt of DF
Klenzak: pt gets better
- add spring
- allows movement but yields DF
- spring recoils » pressure goes downward » foot goes up
What is a BiCAAL?
Bichannel adjustable ankle joint (double action or double Klenzak joint)
BiCAAL: Where is the spring?
posterior chamber
Why is the spring posterior in the BiCAAL?
- acts like a see-saw
- if you load the heel portion, the toes push up
Types of thermoplastic ankle joints used for hinged AFOs
- overlap
- Oklahoma
- flexible Gillette mechanism
overlap joint
- 2 pieces of plastic overlap and held together by rivet
- may have big cutout for thermal contact, swelling, skin issues
Oklahoma joint
- channels made in AFO
- single-axis joint
- easiest type of joint to add to that was first made solid
What does a Gillette joint allow?
allows movement into DF and PF without an actual articulation
common population that gets Gillette joint
peds
Gillette joint: components, restrictions
- small rubber material fits in grooves with rivets
- allows free PF/DF
- provides M/L stability
