Otto Bock C-Brace Instructions For Use Manual page 66

Adjustment with C-Soft
STP flexion plus time [*20ms] (only in expert mode)
The parameter 'STP flexion plus time [*20ms]' determines the length of time for which damping 'STP Flexion
Damping Plus' is active. After this time has elapsed, the system switches back to regular stance phase damping
(STP Flexion Damping).
To avoid limiting comfort and safety on ramps and stairs, this parameter should be set to the shortest possible time.
Ideally this parameter reflects the duration of the stance phase while walking on level ground.
This setting is only available in expert mode. In the delivery condition, the parameter is set to 0. This means the
function is deactivated.
Adjustment:
Have the patient walk on level ground and continue reducing the time until bending during stance phase flexion
can be clearly observed. Take note of feedback from the patient.
Adjustment error:
If the configured time is too long, flexion when stepping onto ramps or stairs may be delayed; this can cause the
patient to fall.
If the configured time is too short, this results in a loss of comfort when walking on level ground.
STP Extension Damping
During physiological gait, stance phase flexion is followed by renewed extension of the knee joint while shifting
weight to the forefoot (triggering the swing phase).
The parameter 'STP Extension Damping' influences this harmonious and natural gait pattern, which results in a
movement pattern that protects the remainder of the locomotor system.
The adjustment of the parameter 'STP Extension Damping' determines how smoothly the leg returns to an exten­
ded position after stance phase flexion. This influences the abruptness of the stop when the knee is stopped prior
to full extension after stance phase flexion. The extension movement of the leg can be controlled with this adjust­
ment.
Adjustment:
Have the patient walk at several different walking speeds and adjust the parameter 'STP Extension Damping' using
the slider control. The goal is to avoid an abrupt extension stop, while also avoiding the feeling that the knee joint is
stuck in a flexed position at different walking speeds. The amount of force required by the patient to extend the
knee joint must not be excessive.
Maximum Toe Load
CAUTION
Maximum load not checked
> Falling due to unexpected product behaviour because of changed damping behaviour.
► The Maximum Toe Load parameter must be checked after each adjustment or change to the dorsal stop.
66 C-Brace