what movements are restricted by the Supracondylar Shell KAFO or a Floor Reaction Orthosis
knee - hyperextension, valgus, and varus
foot - some PF, DF, supination, pronation
page 13 for 3 point pressure systems
yings
how is the Supracondylar Shell KAFO or a Floor Reaction Orthosis unique (regarding the ankle joint)
it is set in PF and supported by an appropriate height heeled shoe
how does the set PF and support from an appropriate height heeled shoe for the Supracondylar Shell KAFO or a Floor Reaction Orthosis influence biomechanical alignment
the weight is shifted anteriorly toward the ball of the foot
this shifts the ground reaction force more anteriorly
the knee is biased toward extension and the hip toward flexion
what are typical indications for the Supracondylar Shell KAFO or a Floor Reaction Orthosis
when the patient demonstrates a crouched (flexed) gait pattern
what is the Conventional KAFO
Double Metal Upright KAFO
what motions are restricted by the Double Metal Upright KAFO
hyperextension, flexion, valgus, varus
pronation, supination
page 16 3 point pressure systems
yings
knee joints within a KAFO are designed to be locked in a _____ position (most commonly ______)
…locked in a stationary position. most commonly full extension
what is the most basic style of joint incorporated into most KAFO designs
single axis knee joint
a single axis knee joint may be ______
offset
an offset knee joint is located _____ to the knee
posterior
by the offset knee joint being posterior to the knee, what type of motion is increased
extension moment (at the knee)
an offset knee joint is not appropriate for someone with…
spasticity
a ________ knee joint allows the knee joint to be locked even through the patient may not possess full knee extension
adjustable or fan design knee joint
advantages to the ring or drop lock release mechanism
inexpensive and simple in design (requires little maintenance/chance of breakdown)
typical indications for a KAFO
when there is compromised motor control at the foot, ankle, knee, hip.
in SOME KAFOs, the ankle joint may be set in approximately #? degrees of DF
10
what motions are restricted by the Custom Molded Plastic KAFO
same as metal KAFO (hyperextension, flexion, valgus, varus)
pronation, supination
what do both metal KAFOs and plastic KAFOs assist with
upright function by controlling the knee and ankle (and indirectly influencing hip position)
benefits of the Plastic Metal Hybrid KAFO
the patient gets flexibility in brace length and can be worn under clothes (cosmetically beneficial)
