Otto Bock 3R80 - Setting Flexion Damping; Setting Extension Damping; Setting Stance Phase Damping; Optional: Setting the Threshold

28
5.5.3 Setting Flexion Damping
Function Means of adjustment Adjustment Meaning
Turn to the right "+" Increase dampingFlexion damping Adjustment valve "F"
(see fig.13)
Turn to the left "–" Reduce damping
>
Tools required:
710H10=2x3 Adjustment Wrench
►
CAUTION! Even at slow walking speeds, the prosthetic foot has to swing through
adequately.
Adjust flexion damping using the adjustment wrench so that the prosthetic foot does not swing
through too far, according to the patient's walking speed.
5.5.4 Setting Extension Damping
Function Means of adjustment Adjustment Meaning
Turn to the right "+" Increase dampingExtension damping Adjustment valve "E"
(see fig.14)
Turn to the left "–" Reduce damping
>
Tools required:
710H10=2x3 Adjustment Wrench
►
CAUTION! The prosthetic knee joint has to reach full extension, even at slow walking
speeds. The extension assist force can be increased if required (see section
"Installing the Compression Spring" – see Page29).
Using the adjustment wrench, adjust extension damping so that the prosthetic knee joint does
not swing too hard against the extension stop.
5.5.5 Setting Stance Phase Damping
Function Means of adjustment Adjustment Meaning
Turn to the right "+" Increase dampingStance phase damping Adjustment ring "S"
(see fig.15)
Turn to the left "–" Reduce damping
>
Required training location:
Stairs and ramp with handrail (e.g. 758G8=1 Test Platform)
Tools required:
710H10=2x3 Adjustment Wrench
1) Place the prosthetic foot on the bottom step so that the middle of the foot goes slightly beyond
the step's edge.
2) Briefly lock the prosthetic knee joint by extending the residual limb.
3) Initiate flexion while bearing weight.
4)
INFORMATION: In case of problems switching between the swing phase and stance
phase, readjust the stance phase damping threshold (see section "Setting the
Threshold" – see Page28).
Adjust stance phase damping so that the prosthetic knee joint does not flex too quickly or
slowly while walking down stairs.
5) Once stance phase damping and the threshold are correctly adjusted for walking down stairs,
check the settings while walking down a ramp and adjust if necessary.
6) Harmonise the settings for walking down stairs and walking down a ramp according to the
needs of the patient.
5.5.6 Optional: Setting the Threshold
Function Means of adjustment Adjustment Meaning
Stance phase damping
threshold
Adjustment ring "!"
(see fig.16)
Turn to the right "+"
(tension is applied to
bumper)
The threshold is
increased – a higher load
is required to activate
stance phase damping