kafo print
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KAFO
Kelompok 2:Fityan hafidzMiftakhulfalah R
Setiyaji agung W
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KAFO
Sebuah orthosis yang mencakup wilayah knee joint, ankle joint dan foot.
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KAFOs• Designs• Materials• Uprights• Joints
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KAFO Designs
– Metal – Plastic – Hybrid – Ischial weight bearing
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KAFO Materials
• Metal KAFOs – Uprights – Bands – Joints – Stirrups – Leatherwork
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KAFO Materials
• Plastic KAFOs – Thermoplastics – Uprights – Joints – Straps
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KAFO Uprights
• Aluminum – Lightweight
• Stainless Steel – Heavier but stronger
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KAFO Knee Joints
• Free/limited motion• Locking
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KAFO Knee Joints
• Single Axis Free Motion – Controls hyperextension – When M-L control is
needed
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KAFO Knee Joints
• Offset Free Motion – Axis is posterior – Increased knee extension
stability
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(left ) Ground Reaction Force in front of the Offset Knee Joint will produce anextension moment, maintaining the knee in extension, creating a stable KAFO
(right ) GRF behind the Offset Knee Joint will produce a Flexion moment,allowin the knee to flex creatin an unstable KAFO
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KAFO Knee Joints
• Polycentric Free Motion – Multiple axes of motion – More closely
approximatesinstantaneous axis of rotation in anatomicalknee joint
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KAFO Knee Joints
• Drop Lock – Metal ring drops over top
of joint, preventing flexion –
Simplest of locks
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KAFO Knee Joints
• Bale Lock – Both locks are connected
by metal hoop, or bale
–
Locks are disengaged bypulling bale up – Locks engage
automatically whenorthosis is extended
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Metal KAFO Ankle Joints
• Free motion• Dorsiflexion assist• Double-action
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Metal KAFO Ankle Joints
• Free/Limited Motion – ROM determined by
stirrup head shape
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Metal KAFO Ankle Joints
• Dorsiflexion Assist – Posterior spring creates
dorsiflexion moment
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Metal KAFO Ankle Joints
• Double-action – Anterior & posterior
channels allow for insertion of pins and/or springs to providevarious combinations of ROM and assist
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Plastic KAFO Ankle Joints• Free or limited motion• Variable motion
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Plastic KAFO Ankle Joints• Tamarack
– Flexible with no ROMcontrol
–
One variant can producedorsiflexion assist
DF Assist Neutral
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Plastic KAFO Ankle Joints
• Oklahoma – More rigid than Tamarack
with single axis of motion –
No inherent ROM control
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Plastic KAFO Ankle Joints
• Friddle Variable Motion – Allows fixed or variable
ROM –
Cannot be adjusted onpatient