Walking; Sitting Down; Sitting; Sitting Function - Ottobock C-Leg 3C98-3 Gebrauchsanweisung

2) Slowly extend the joint up to the desired standing angle.
3) In this position, keep the joint still for one second until it vibrates.
→ The blocked joint can now be fully loaded in the flexion direction.
Releasing the manual joint lock
► Quickly extend the joint or tilt the thigh slightly forward or more than 50° back.

8.1.2 Walking

Initial attempts at walking with the prosthesis 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 freely.
Switching to the swing phase requires that the prosthesis roll over to the front
out of the stride position.

8.1.3 Sitting down

The resistance in the prosthetic knee joint while sitting down ensures evenly
bending into the sitting position.
1) Place both feet side by side at the same level.
2) While sitting down, distribute weight evenly between both legs and use
3) Move the buttocks in the direction of the backrest and lean the upper body

8.1.4 Sitting

INFORMATION
While sitting, the knee joint also switches to energy saving mode. This energy saving mode is
activated regardless of whether the sitting function is activated or not.
If the patient is in a sitting position for more than two seconds (i.e. the thigh is
close to horizontal and there is no load on the leg), the knee joint switches the
resistance to a minimum in the extension direction.
A sitting function can be enabled using the adjustment software. For more
information about the sitting function, see the following section.

8.1.4.1 Sitting function

INFORMATION
To use this function, it needs to be enabled in the adjustment software. It also has to be activ­
ated using the Cockpit app (see Page 70).
In the sitting position, the resistance in the flexion direction is reduced in addition to the reduction
of resistance in the extension direction. This makes it possible to swing the prosthetic leg freely.

8.1.5 Standing up

Flexion resistance is increased steadily while standing up.
armrests, if available.
forward.
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