Otto Bock C-Brace Instructions For Use Manual page 50

7.3 Movement patterns
CAUTION
Incorrect mode switching
Falling due to unexpected product behaviour because of changed damping behaviour.
Ensure that you stand securely during all switching processes.
►
► Verify the changed damping characteristics after switching and observe the feedback from
the acoustic signal emitter.
► Switch back to basic mode once the activities in the additional mode have been completed.
► Take the weight off the product and correct the switching, if required.
7.3.1 Standing
Knee control through high flexion resistance and static alignment.
The knee joint of the product 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 (see Page 56) for extended standing.
INFORMATION: The O&P professional can set the timer for the standing
function using the adjustment software. High stance phase damping is
automatically activated during an extended stance phase with the knee
slightly flexed (knee joint approx. 5° to approx. 20°). This occurs after
the timer runs down.
This mode is deactivated by extending the knee joint.
7.3.2 Walking
Initial attempts at walking with the product always require instruction from
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 freely.
To safely switch to the swing phase, the system requires special measure­
ments and prerequisites. The fundamental prerequisite is a sufficient forefoot
load with simultaneous extension of the product's 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.
7.3.3 Sitting down
INFORMATION
If a mode with a high setting for the parameters 'Base Resistance' and/or 'Resistance Gain'
such as 'Extended standing' is configured as the additional mode (2nd mode), switching back
to basic mode (1st mode) must be performed before sitting down (see Page 56). Otherwise it is
not possible to flex the knee joint.
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