Orthotics Flashcards
What single axis KAFO is used for patients with genu recurvatum, and why?
Free motion knee joint has a stop to prevent hyperextension
What do you add to a dual channel ankle joint for plantar spasticity
Posterior pin
What does adding a footplate to a knee immobilizer?
Decreases rotational instability of the knee
What do you add to a dual channel ankle joint for toe drag
Posterior pin
Advantage of thermoplastic orthoses
Can be molded and remolded by heating
2 main reasons why knee orthoses are prescribed
- Prevent genu recurvatum
2. Provide mediolateral stability
Which plastic AFO trim line is used with someone with high level of spasticity
Rigid plastic AFO
Which type of knee orthosis is prescribed for protection and management of sports injuries, such as ACL injuries?
Lenox-Hill derotation orthosis
Dorsiflexion creates knee flexion moment at what part of gait cycle?
After heel strike
2 main types of KAFOs
Single axis or polycentric KAFO
What do you add to a dual channel ankle joint for weak knee extensors?
Anterior pin
What do you add to a dual channel ankle joint for flaccid foot drop
Posterior spring
What do you add to a dual channel ankle joint for weak plantarflexors
Anterior pin
Which plastic AFO trim line is used for someone with flaccid foot drop
Posterior leaf spring AFO
What single axis KAFO is used for patients with severe obesity and quadriceps weakness?
KAFO with double metal uprights and posterior offset knee joint
3 trim line designs for plastic AFOs
- Posterior leaf spring
- Semirigid plastic AFO
- Rigid plastic AFO
In a reciprocal gait orthosis, how is forward stepping achieved?
Active hip flexion
Lower abdominal extension
Trunk extension
What do you add to a dual channel ankle joint to limit plantarflexion?
Posterior pin
What do you add to a dual channel ankle joint for knee hyperextension?
Posterior spring
What does adding a spring or a pin in a single channel ankle joint do?
Spring assists in dorsiflexion.
Pin limits plantar flexion.
Which type of knee orthosis is prescribed to control knee hyperextension/genu recurvatum
Swedish knee cage
What do you add to a dual channel ankle joint to assist dorsiflexion
Posterior spring
What do you add to a dual channel ankle joint to limit dorsiflexion
Anterior pin
Which plastic AFO trim line is used for someone with foot drop with some extensor tone and/or mediolateral instability of the ankle
Semirigid plastic AFO
Line of gravity in relation to hip joint, knee joint and ankle joint
Posterior to hip, anterior to ankle, anterior to knee
What type of orthosis is a bilateral HKAFO that paraplegics may use to ambulate?
Reciprocal gait orthosis
What orthosis is used in a paraplegic that can provide unsupported standing
Scott-Craig orthosis
Which plastic AFO trim line is used for someone with Charcot joint
Rigid plastic AFO
Plantar flexion creates knee extension moment at what parts of gait cycle?
Midstance to toe off
Line of gravity in relation to cervical, thoracic and lumbar vertebrae
Behind cervical, in front of thoracic, behind lumbar
