sists of 2 screws, 1 parallel truing tube and, depending on the size of the
system joints, 2 adapter pieces.
The system ankle joints can be equipped with a choice of stop screws or
compression springs in order to limit movement, e. g. for plantar flexion. Due
to varying alignment parameters, such as the generated forefoot leverage or
the flexion position of the orthosis, the system ankle joints are subjected to
increased strain.
Assembling the system joints
INFORMATION
Stops and compression springs can be used for the individual adjustment
of the system joint. The system joint can therefore be adapted to the
patient's requirements.
1) Slide the bearing bushings (5) onto the system ankle joint (6).
2) Secure the foot stirrup (7) with the joint bolt (4), the joint nut with internal
thread (8) and the cap screw (3).
3) INFORMATION: Different set screws are used depending on the
size of the system joint. Compression spring: Install the ball (12), cyl
inder pin (13) and compression spring (14) with the set screw (1).
4) Stop: Insert the cylinder pin (2) into the system ankle joint and screw in
the set screw (1).
Installing the system bar in the system ankle joint
1) Insert the system bar (18) into the system bar receiver (11) and mark the
bore on the system bar (18).
2) Remove the system bar (18) from the system bar receiver (11) and drill a
Ø 4 mm bore in the system bar (18).
3) Secure the system bar (18) and the system ankle joint with the set
screw (9).
Gluing the system bar
For stability reasons, the system bar (18) must be glued into the system bar
receiver (11) of the system ankle joints using 636W28 Ottobock special
adhesive and hardener.
1) Use a degreasing cleaner (such as 634A1) to degrease the bonding sur
faces of the system bar (18) and the system bar receiver (11).
2) Mix the special adhesive and hardener thoroughly and apply it to the
components being glued.
3) Insert the system bar (18) and secure it with the set screw (9). The final
bonding strength of the adhesive is reached after 16 h.
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