Swing Phase Control - Össur OH7 KNEE Notice D'utilisation

In addition, in the case of the KH7 Knee version with loop adapter, alignment corrections in flexion, extension,
adduction and abduction of up to a maximum of 10° are made possible through the use of adjustment discs (41).
Attention: in order to prevent any unwanted rotation and thus risk to the user, always make sure that the central
screw concerned (34, 35 or 36) is tightened to a torque of 35 Nm at the dynamic fitting session.
ALIGNMENT
The OH7/KH7 Knee joint is supplied by the factory in full working order with the basic settings.
Carefully start testing the function of the joint with the user at the dynamic fitting and check whether this basic
setting suits the needs of your patient.
If not, please go through the following steps.
Stance phase stability
Adjustment by shifting the joint
In the basic configuration described here, the axial alignment gives high stance phase stability.
This can be adjusted to the individual needs of the patient by shifting the knee joint in the AP direction.
Shift the joint backwards
▸ safer alignment (Fig. 2)
Shift the joint forwards
▸ more dynamic alignment (Fig. 3)
Adjusting the axle geometry
The axle geometry of the mediOH7/KH7 Knee can be changed using interchangeable wedges. This allows the time
of transition from the stance phase to the swing phase to be adjusted to the user's desired need for safety.
The axle geometry can be adjusted in two different settings:
Joint without wedge (as supplied)
▸ high safety with A-P shifting
Joint with wedge
▸ more dynamic
The OH7/KH7 Knee is supplied with a wedge. If necessary, the wedge is mounted on the back stub axle with two
screws (45).
To change or remove the wedge (44) loosen the screws (45). After changing the wedge tighten the screws by hand
again and secure with Loctite. Use a 2 mm Allen key.

SWING PHASE CONTROL

You can set flexion and extension separately depending on the user's needs.
The hydraulic system is supplied in its basic setting. In the basic setting, valves A and B are both opened by one
turn (8 notches). Valve C is opened by 1½ turns (12 notches).
You can adjust the joint to any individual gait from this basic setting.
Adjusting the flexion and extension valves
A description of the function of the individual components
Valve A Resistance to flexion above 60° flexion angle
Valve B resistance to flexion from 0-60° flexion angle
Valve C resistance to extension
Basic rule when setting up the joint:
Open valve A + open valve B ≥ open valve C
11