Otto Bock C-Leg 3C98-3 Instructions For Use Manual page 24

8.1.6 Walking up stairs
8.1.7 Walking down stairs
8.1.8 Walking down a ramp
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Walking up stairs step-over-step is not possible.
1) Hold the handrail with one hand.
2) Place the foot of the sound leg on the first step.
Bring up the leg with the prosthesis.
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. The knee joint can switch correctly and permit a controlled rollover
only by stepping down properly with the sole of the foot. 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
halfway over the edge of the step.
→ This is the only way to ensure a secure rollover.
3) Roll the foot over the edge of the step.
→ This flexes the prosthesis slowly and evenly under high flexion resist­
ance.
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.
Under increased flexion resistance, permit controlled flexion of the knee joint
which lowers the body's centre of gravity.
The swing phase is not triggered even though the knee joint is flexed.