Otto Bock 28U22 Series Instructions For Use Manual page 9

NOTICE
Damage due to incorrect environmental conditions. This product is not flame-resistant. Keep
the product away from flames or other heat sources.
The product should not come into contact with grease or acidic agents, unguents and lotions.
This may reduce the product's period of use.
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 even on uneven grounds.
Walking in stairs by taking weight on the fore foot as well as squat is permitted due to its dynamic
features.
NOTICE
Damage due to inadmissible handling. The orthosis is made of pre-impregnated compostie
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
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 Flex, 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 Flex into correct size: If the user has a removable inner sole in his/her shoe,
use that for marking the correct size on the foot plate. (pic. 1), or draw a line around the user's
foot directly on the foot plate.
4. Cut the foot plate into correct size (according to the line on the foot plate) (pic. 2). When ad-
justing the foot plate width; cut 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. When
adjusting the length of the foot plate, focus on cutting 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 Flex
should not be used).
8. Apply the textile part on the calf part of the orthosis (pic. 4).
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