Ossur Flex-Foot Axia Bedienungsanleitung Seite 5

ENGLISH
Flex-Foot Axia (Figure A)
®
Indicated for low to moderate impact levels only
• Maximum user weight 140 kg (308lbs)
• Heel height 10mm (3/8")
• Available in sizes 23-30
• Clearance 66 mm – 77 mm (2 5/8"-3")
Bench Alignment (Figures B+C)
• Adjust to appropriate heel height (using the shoe).
• Introduce appropriate socket angles flexion/ extension and abduction/adduction.
• Divide the foot cover into 3 equal portions.
• The load line should fall at the junction of the posterior and the middle third portions
as shown in the diagram (the guide inside of the foot cover matches the one third
portion).
Dynamic Alignment
The tapered heel part with the compressed tarsal core stores energy at heel strike, then
slowly releases it to assist tibial progression to midstance. The forward
momentum generated by this action results in the toe being loaded for optimum energy
release at terminal stance. The heel to toe action can be influenced by
• A-P positioning of foot
• Dorsi-Plantarflexion
• Heel stiffness adjustments
Heel Stiffness
Heel too soft
Symptoms
• Foot will come to flat position too early (amputee will feel like sinking into a hole)
• Extra energy is required to climb up over the toe
• Toe will feel too stiff.
• Knee may hyperextend.
Action
• Shift socket anterior (or foot posterior)
• Add inserts
Heel too hard
Symptoms
• Rapid heel to toe movement
• At heel strike amputee has poor control of his prosthesis
• Minimal energy return feeling
• Knee may become unstable
Action
• Shift socket posterior (or foot anterior)
• Remove the inserts
Heel Inserts (Figure D)
• A insert kit is available for the LAPOXYYZ.
• Instant adhesive is necessary to bond the heel inserts.
• The adhesive cures in 15-20 seconds.
• Care should be taken that it does not come into contact with skin.
Guidelines
• To insert: Put in the insert into the rib, furthest back on the tarsal core. Repeat on the
other side (Figure E).
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