Otto Bock Triton side flex Instructions For Use Manual page 20

5.1.3 Static Alignment
INFORMATION
Frontal plane, hip width stance: Align the prosthesis so that the m-l unit
is in the neutral position (see fig. 2). Thus the entire available movement
range can be used for inversion and eversion.
• Ottobock recommends checking the alignment of the prosthesis using
the L.A.S.A.R. Posture and adapting it as needed.
• If necessary, the alignment recommendations (TF modular leg pros­
theses: 646F219*, TT modular leg prostheses: 646F336*) may be
requested from Ottobock.
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 plastic protector from the pyramid after completing the
dynamic fitting and the walking 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. 3).
3) To remove the heel wedge, push it out to the side.
5.2 Optional: Installing the foam cover
The foam cover sits between the prosthetic socket and prosthetic foot. It is
cut longer in order to compensate for the movements of the prosthetic foot
20