Perform the alignment and assembly of the prosthetic components in the
alignment apparatus according to the following specifications:
Heel height:
Effective heel height (shoe heel height – sole thickness of fore
foot) + 5 mm
Frontal alignment:
Alignment reference line on a–p markings of the connection
cap/footshell (see fig. 1)
Sagittal alignment:
Alignment reference line on m–l markings of the connection
cap/footshell (see fig. 1)
Connect the prosthetic socket and prosthetic foot using the chosen
adapters.
Be sure to follow the adapter instructions for use during adjust
ment and installation.
Sagittal alignment:
Determine the centre of the prosthetic socket with the 50:50
gauge.
Align the prosthetic socket centrally to the alignment reference line.
Socket flexion:
Residual limb flexion of the patient + 5°
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
•
Use the L.A.S.A.R. Posture for static alignment optimisation of the pros
thesis, if available.
•
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 prosthesis in the sagittal plane (AP) and in the frontal plane
(ML) by making angle or slide adjustments so that correct heel contact,
smooth roll-over and optimal weight transfer onto the contralateral side
are ensured.
•
With transtibial amputees, make sure that physiological knee flexion is
achieved in the stance phase.
16 | Ottobock
Bench alignment process