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ANKLE FOOT ORTHOSES
Swagatika
SMO
• Supra Maleolar Orthosis
• Low profile design that crosses the ankle
• Less invasive trim lines than a standard AFO
• Covers about 80% of the surface area of foot
TYPES
• Static Ankle foot orthoses
• Not solid AFO
• Articulated – that provides desired/ regulated amount of movement
• It may also be used for progressive increases or decreases in sagittal plane ROM and control
TYPES (functional)
• 1. Metal bars or conventional
• 2. Total Contact
• 3. Floor reaction
• 4. Un weighting
• 5. Immobilizing
Static AFO
Articulating AFO
Conventional/Metallic AFO
• Low cost
Disadvantages:-
Heavy
Contains mechanical stirrup, ankle joints…wear and tear,
Is external ,hence less effective
Total Contact AFOs
• provide sleek, intimate fit with total contact to provide better control
• May be thermoplastic and thermosetting
• higher patient acceptance due to light weight & concealment (150-200gms);
• may be hotter ,if not perforated• more common today
Floor reaction AFO/FRO
• Uses floor reaction force through toe aspect of foot plate to prevent forward tibial progression & subsequent knee collapse
Unweighting AFO
• May be patella tendon bearing (PTB) ,i,e. specific weight bearing
or
• total surface bearing, TSB (inverted cone with lace closure) to unweight the ankle foot using prosthetic principles
TSB unweighting AFO and specific weight bearing AFO
Immobilizing AFO
• Commonly used with a lower extremity deficiency when ankle immobilization is desired
• – distal tibia/ fibula fracture
• – foot bone fractures
• – tendocalcaneus rupture
• – Diabetic Foot (Charcot Foot)
Immobilizing AFOCrow walker
Cam Walker
Questions