Dynamic Alignment Optimisation; Checking The Socket After Bench Alignment; Flexion Stop - Otto Bock Genium 3B1-3 Instructions For Use Manual

The goal of optimised alignment is that the user must compensate as little as possible with their residual limb.
Optimised alignment of the prosthesis components can reduce the effort required from the patient.
INFORMATION
During static alignment optimisation, the knee joint is automatically locked in the flexion direction. This should
enable the patient to stand in a stable stance that is unaffected by the alignment. Patients can only walk with the
prosthetic leg fully extended in this situation!

7.1.7 Dynamic alignment optimisation

After adjusting the product with the adjustment software, perform dynamic optimisation during trial walking. Often,
the following aspects have to be observed and adapted, if necessary:
• Socket flexion position by verifying step length symmetry (sagittal plane)
• Adduction position of the socket and M-L positioning of the socket adapter (frontal plane)
• Rotation position of the knee joint axis and outward rotation of the prosthetic foot (transversal plane)

7.1.8 Checking the socket after bench alignment

After bench alignment, verify that at maximum extension and maximum flexion the distance from the socket to the
knee joint is not less than the minimum. A collision of the socket with the hydraulics or frame can cause damage to
the knee joint.
INFORMATION
Checking the distance using the adjustment software
Checking the distance between the socket and hydraulics at maximum flexion is also supported by the "X-Soft"
adjustment software starting with version "V1.10". See the online help of the adjustment software for further
information.
Verification at maximum flexion
Verification at maximum extension

7.1.9 Flexion stop

The knee joint comes fitted with a flexion stop upon delivery. This reduces the maximum flexion angle by 22.5°, thus
preventing the socket from coming into contact with the hydraulics.
To limit the flexion angle, the knee joint can be equipped with the following flexion stops:
• 4H99 flexion stop (optional accessory): reduction of the maximum flexion angle by 7.5°
• 4H100 flexion stop (in scope of delivery): reduction of the maximum flexion angle by 15°
• 4H103* flexion stop (already installed on delivery): reduction of the maximum flexion angle by 22.5°
Genium 3B1-3/3B1-3=ST
If the distance between the socket and hydraulics is not sufficient, the hydraulics
may be damaged. Check the distance as follows:
1) Bring the knee joint with socket to maximum flexion.
2) Check the available distance between the hydraulics and socket. It must be at
least 3 mm.
INFORMATION: If the distance is less, a flexion stop has to be installed or
an existing flexion stop replaced with a larger one. For information on the
flexion stop, see the next section.
If the distance between the socket and sealing sleeve/top edge of the installed pro­
tective cover is not sufficient, the frame may be damaged. Check the distance as fol­
lows:
1) Bring the knee joint with socket to maximum extension.
2) Check the available distance between the sealing sleeve/top edge of the
installed protective cover and socket. It must be at least 5 mm.
Preparing the product for use
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