Otto Bock 28U11 Instructions For Use Manual page 9

1.5 Construction
Thanks to its construction with three dynamic elements (the pylon, the heel and forefoot of the
sole) the orthosis provides a smooth natural gait on even and uneven grounds.
Walking in stairs by taking weight on the fore foot as well as squat is permitted due to its dyna-
mic features.
NOTICE
Damage due to inadmissible handling. The orthosis is made of pre-impregnated carbon fiber
material and cannot be thermoformed. The foot of the sole and the connection elements must
be free from holes as these would interrupt the fibers and weaken the component.
2 Handling
2.1 Size Selection of the product
The size selection of the orthosis is based on the shoe size. Left and right. S-XL.
2.2 Adapting and Applying the product
1. Shoe selection: to obtain best effect of the WalkOn, the user need to wear a stable, laced shoe
with a firm heel counter. The heel height should be 1,0 cm (+/-5 mm) / 0,4 inches (+/-0,2 inches).
2. Pick out correct size from the size chart.
3. Adapt the WalkOn into correct size: If the user has a removable inner sole in his/her shoe, use
that for marking the correct size on the footplate. (pic. 1), or draw a line around the user's foot
directly on the foot plate.
4. Grind the foot plate by use of a grinding machine into correct size (according to the line on
the foot plate). When adjusting the foot plate width; grind on the lateral side but not more than
necessary, to avoid the medial part/the insert to slide in the shoe and to avoid pressure on the
medial malleol (pic. 2). When adjusting the length of the foot plate, focus on grinding the back
of the foot plate, then the insert will automatically be positioned behind (posterior) the medial
malleol which prevents pressure on the ankle and malleol (pic. 3).
5. The shell can be adjusted by grinding, if necessary.
6. In the event of sharp edges at the orthosis, smooth them out by grinding the edges in water
with a grinding paper.
7. If the user has a foot deformity, correct it with a corrective insole or a custom moulded device.
(If the foot cannot be corrected by an insole, the orthosis and a stable shoe, a WalkOn should
not be used).
8. Apply the textile part on the calf part of the orthosis (pic. 4).
9. Cut the soft velcro part at a proper length. To assure a good attachment, the soft velcro should not be
more than 2 cm longer than the hard Velcro, when the calf band is attached around the user's calf.
2.3 Instruction for use and care
Material: Carbon fiber composite. Calf band: PCM (Phase Change Material), a temperature
regulative material, micro hook and loop, soft velcro tape.
Cleaning:
• Textile part: Machine wash at 40 °C (104 °F) is recommended when necessary but approximately
twice a week. Use a standard mild detergent. Wash out thoroughly and air-dry. Note: Residues
of cleaning agents may cause skin irritations and wear of material.
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