Use; Movement Patterns; Standing; Walking - Ottobock C-Brace Gebrauchsanweisung

7 Use

7.1 Movement Patterns

CAUTION
Improper mode switching
In certain situations, this can lead to falling caused by:
► Unintentional mode selection resulting in altered damping behaviour of the orthosis (e.g.
under flexion load in cycling mode).
→ Verify the desired functionality after switching (observe acoustic feedback signals).
→ Switch back to 1st mode when the activities in 2nd mode are concluded.
→ Take weight off the orthosis and correct switching if required.
→ The user must stand securely during all switching processes.

7.1.1 Standing

Knee control through high hydraulic resistance and static alignment.
The orthosis has no locking function, so that slow bending is possible under flexion
load. To restore the stable standing position, place the leg back under the body and put
weight on the heel.
Manually switch to LOM mode for extended standing.
INFORMATION: By adjusting the parameter 'Stance Function Timer [*20ms]' via C-
Soft, high stance phase damping is activated after the knee joint remains flexed (5° to
20°) for a period of time (STA mode). This mode is deactivated by extending the knee
joint.

7.1.2 Walking

Initial attempts at walking with the orthosis always require the instruction of trained,
qualified personnel. The hydraulics stabilise the knee joint in the stance phase and
release the knee joint in the swing phase so that the leg can swing forward.
To safely switch to the swing phase, the system requires special measurements and
prerequisites. The fundamental prerequisite is a sufficient forefoot load with simultan­
eous extension of the orthosis knee joint. If this is not achieved, the leg cannot swing
through.
INFORMATION: When walking on soft surfaces (forest floor), more force may be
required to trigger the swing phase.

7.1.3 Sitting Down

INFORMATION
If a mode with a high setting for the parameters 'Base Resistance' and/or 'Resistance Gain'
such as "Extended Stance" is configured as 2nd mode, switching to 1st mode must be per­
formed before sitting down. Otherwise it is not possible to bend the knee joint.
Orthosis damping while sitting down ensures that the knees bend evenly, thereby sup­
porting the sound side.
1) Position the feet side by side.
2) While sitting down, distribute your weight evenly between both legs and use the
armrests where applicable.
INFORMATION: Avoid supporting your weight on the armrests.
3) Move the buttocks in the direction of the backrest and lean the upper body forward.
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