Otto Bock Genium X3 Setup Manual page 21

Optimized Physiological Gait (OPG) Function
OPG minimizes the Genium X3 user's prosthetic deviations
and promotes a more biomechanically correct gait pattern.
There are no initiation or exit criteria that apply to OPG.
It simply happens during the course of normal walking.
Selection of this function enables the following features:
PreFlex, Adaptive Yielding Control,
Stab ility Control (DSC),
OPG
PreFlex
Adaptive Yielding Control
Dynamic stability Control (DSC)
Stance Release on Ramps
Adaptive Swing Phase Control
Dynamic
Stance Release on Ramps and
Features
PreFlex ensures the knee is in four degrees of flexion at the end of swing phase in preparation for loading
response. PreFlex allows users to walk with natural stance flexion independent of gait speed. The pros-
thetic foot will also reach foot flat more quickly to promote stability on uneven surfaces when PreFlex is
present. PreFlex also allows users to ascend ramps in a more anatomically correct way by reducing the
need for users to vault over a fully extended knee.
The knee has auto-adaptive stance and swing extension resistance. The stance flexion resistance experi-
enced by the user is dependent on the slope or incline when walking downhill.
DSC ensures the knee will not release stance resistance during biomechanically unstable static and
dynamic conditions. Constantly checking multiple parameters, DSC ensures the optimally timed moment
for the knee to safely switch from stance to swing. Because DSC is always monitoring knee function, multi-
directional movement and walking backward are also possible without risk of stance resistance releasing.
The flexed and partially loaded knee will release stance on hills and ramps to allow for greater knee flexion,
improved swing phase clearance, and less hip flexion force needed to bring the shank into extension.
Instantaneous adaptation to varied walking cadences ensures the knee always achieves the swing flexion
target angle within (+/-) one degree. The swing extension and flexion resistance experienced by the user is
adaptive and varies, depending on the sensor inputs received by the microprocessor. Genium X3 doesn't
default to pre-programmed resistances. Swing flexion resistance remains auto-adaptive even when OPG is
not selected on the functions tab.
Adaptive Swing Phase Control. Adaptive Swing Phase
Control and DSC are enabled even if OPG is not selected
on the functions tab. Because stance extension and swing
extension resistances are auto-adaptive, the sliders for these
functions will be disabled during programming if OPG is
selected on the functions tab.
Genium X3 Set-up Guide | Ottobock 21