5.1.2 Bench Alignment
TT bench alignment
Required materials: 662M4 goniometer, 743S12 heel height measuring device,
743A80 50:50 gauge, alignment tool (e.g. 743L200 L.A.S.A.R. Assembly or 743A200
PROS.A. Assembly)
Perform the assembly and alignment of the prosthetic components in the alignment
tool according to the following specifications:
Sagittal plane
Heel height: Effective heel height (shoe heel height – sole thickness of fore
foot) + 5 mm
Exterior foot rotation should not exceed 5°. Otherwise the inversion/eversion
of the prosthetic foot could influence the rollover behaviour and the frontal
knee stability in the stance phase.
a–p positioning, middle of the prosthetic foot to the alignment reference line:
Foot size [cm]:
21 to 25
26 to 28
29 to 30
Connect the prosthetic foot and prosthetic socket using the chosen adapters.
The instructions for use of the adapters must be observed.
Determine the centre of the prosthetic socket with the 50:50 gauge. Align the
prosthetic socket centrally to the alignment reference line.
Socket flexion: Individual residual limb flexion + 5°
Frontal plane
Alignment reference line of prosthetic foot: between big toe and second
toe
Alignment reference line of prosthetic socket: along the lateral patella
edge
Observe the abduction or adduction position.
TF bench alignment
► Observe the information in the prosthetic knee joint instructions for use.
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.
20
Bench alignment process
Anterior placement, middle of foot to align
ment reference line [mm]:
25
30
35