2.5 Static Alignment Optimization (with L.A.S.A.R. Posture)
Load line
Load line 30 mm in
front of alignment
reference point
Static alignment optimization with LASAR Posture (743L100)
The static alignment can be substantially improved using L.A.S.A.R. Posture. In order to ensure appropriate stability
combined with easy swing phase initiation, please proceed as follows:
1 After the self-calibration of the L.A.S.A.R. device, the load line can be measured. To do this, have the transfemo-
ral amputee step onto the force sensing plate with the C-Leg® and onto the height compensation plate with the
other leg. The prosthetic side should be sufficiently loaded (> 35% of the body weight).
2 The alignment is adapted exclusively by modifying the plantar flexion so that the load line/laser line runs approxi-
mately 30 mm in front of the alignment reference point (=knee axis) of the C-Leg®.
3 After adjusting the C-Leg® with C-Soft (see Section 2.7 "C-Soft") perform dynamic optimizations during trial
walking.
Alignment reference point
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