Ottobock 12K41 Instructions D'utilisation page 37

Additional steps: installing the elbow joint for the 12K42, 12K44, 12K50 products
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6.13 Setting the preflexion
Complete the following steps to set the preflexion:
1) Flex the arm.
2) Set the compensation to the minimum level using the dial.
3) Extend the forearm.
INFORMATION: The forearm has to hang down freely.
INFORMATION: The preflexion angle is initially set at about 10°.
4) Secure the strap cam on the extension stop.
5) Flex the forearm until the strap forms a loop.
6) Lock the joint with the cable lock.
7) Loosen the screw on the strap clamp.
8) Shorten or lengthen the strap.
INFORMATION: Lengthening the strap decreases the preflexion. Shortening the strap increases the
preflexion.
INFORMATION: A 3 mm change in the length of the strap changes the flexion angle by about 5°. The
free swing range is changed by the same amount as the flexion angle.
9) Tighten the screw on the strap clamp.
10) Free the strap cam.
INFORMATION: For the flexion aid to function, the strap cam has to be up against the extension stop
when the forearm is extended.
6.14 Fastening the flexion cable
Complete the following steps to fasten the flexion cable:
12K41, 12K42, 12K44, 12K50
1) Thread the strap under axle.
INFORMATION: Make sure the lamination ring
is correctly positioned.
INFORMATION: There needs to be space for the
strap clamp between the strap clamp guide and
the lamination ring.
INFORMATION: Ensure the strap is straight and
not twisted.
2) Slide the strap clamp under the lamination ring.
3) Secure the strap clamp with the screw.
Preparation for use
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