7.3.4 Sitting
In a sitting position, i.e. when the thigh is close to horizontal and there is no
load on the leg, the knee joint switches to low resistance in both the flexion
and extension directions.
If the load on the prosthesis is not adequate, the leg remains extended while
sitting down. Due to the nearly horizontal position of the lower leg, damping is
reduced automatically and the lower leg drops down on its own.
7.3.5 Standing up
Notwithstanding its low damping while sitting, the prosthesis supports standing up.
Damping is increased after rising from the seat.
After standing up entirely, high damping is set automatically.
INFORMATION
If the intuitive stance function was deactivated in the adjustment software, there is no support
while standing up.
1) Place the feet at the same level.
2) Lean the upper body forward.
3) Put the hands on armrests, if available.
4) Stand up with support from the hands. while keeping weight evenly distrib
7.3.6 Walking down stairs
The joint makes it possible to walk down stairs step-over-step or one at a time.
Walking down stairs step-over-step
Walking down stairs step-over-step must be practised and executed con
sciously. Only by properly stepping down with the sole can the system switch
correctly and permit controlled rollover. The motion must be carried out in a
continuous pattern in order to allow the motion sequence to proceed in a fluid
manner.
1) Hold the handrail with one hand.
2) Position the leg with the prosthesis on the step so that the foot projects
3) Roll the foot over the edge of the step.
4) Place the foot of the other leg onto the next step.
Walking down stairs one step at a time (step by step)
1) Hold the handrail with one hand.
2) Place the foot of the prosthetic leg on the first step.
3) Pull up the other leg.
uted on the feet.
halfway over the edge of the step.
→ This is the only way to ensure a secure rollover.
→ This flexes the prosthesis slowly and evenly under high flexion resist
ance.
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