Otto Bock 1C63 Triton Low Profile Instructions For Use Manual page 20

5.1.4 Dynamic Trial Fitting
• Adapt the alignment of the prosthesis in the frontal plane and the sagittal
plane (e.g. by making angle or slide adjustments) to ensure an optimum
gait pattern.
TT fittings:Make sure that physiological knee movement in the sagittal
•
and frontal plane is achieved when the leg begins to bear weight after
the heel strike. Avoid medial movement of the knee joint. If the knee joint
moves in the medial direction in the first half of the stance phase, move
the prosthetic foot in the medial direction. If the medial movement occurs
in the second half of the stance phase, reduce the exterior rotation of the
prosthetic foot.
• Remove the adapter cover from the prosthetic foot after completion of
the dynamic trial fitting and gait training exercises.
5.1.4.1 Optimising the heel characteristics
The heel characteristics are optimised by using heel wedges. In case the
heel strike or heel contact is too soft during the mid-stance phase, the heel
can be stiffened by means of a heel wedge.
Two heel wedges are available (transparent=soft, black=hard). Ottobock
recommends starting with the transparent heel wedge.
1) Align the recesses in the heel wedge, in the proximal and posterior dir­
ections.
2) Slide the heel wedge into position between the attachment spring and
heel spring until it engages (see fig. 2).
3) To remove the heel wedge, push it out to the side.
5.2 Optional: Installing the foam cover
A connecting element (such as a connection plate, connection cap or foam
connection cap) provides a detachable connection between the foam cover
and the prosthetic foot.
Required materials: Degreasing cleaner (e.g. 634A58 isopropyl alco­
>
hol), 636N9 contact adhesive or 636W17 plastic adhesive
1) Measure the distance from the knee rotation point to the desired end of
the foam cover and add the compression allowance: 10 mm for poly­
ethylene foam, 30 mm for polyurethane soft foam. For TF prostheses,
add twice the compression allowance because a compression allowance
is needed both above and below the knee axis.
2) Cut the pre-shaped foam cover to length and fit it in the proximal area on
the prosthetic socket.
3) Pull the foam cover over the prosthesis.
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