Checking The Socket After Bench Alignment - Otto Bock Kenevo 3C60 Instructions For Use Manual

7.1.4 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.
Verification at maximum flexion
Kenevo 3C60/3C60=ST
Position the middle of the foot (MF) approx. 30 mm/1.18 inch
anterior to the alignment reference line (A). This applies to all
foot components that are recommended for use with the product,
independently of the previous alignment specifications in the
instructions for use of those feet!
Noting the alignment recommendation of the foot component,
add 5 mm to the effective heel height (shoe heel height – sole
thickness in the forefoot area) and set the outward rotation of the
foot.
Place the alignment reference point (=knee axis) approx. 0-5
mm/0-0.19 inch anterior to the alignment reference line.
Take into account the knee-ground distance and outward rotation
of the knee (the adapter insert provides for a rotation of approx.
5°). Recommended sagittal positioning of the alignment refer­
ence point: 20 mm/0.79 inch above the medial tibial plateau.
Connect the foot and knee joint using a tube adapter. To do so,
tilt the joint in the correct position and set the required tube
length.
Mark the lateral centre of the socket with a centred, proximal dot
and a distal dot. Mark a line through both points from the edge to
the end of the socket.
Now position the socket such that the alignment reference line
passes through the proximal centre mark.
Adjust the socket flexion to 3° – 5°, but take the individual situ­
ation (e.g. hip joint contractures) and the ischial tuberosity-to-
ground distance into account.
Connect the socket and modular knee using adapters.
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.
Preparation for use
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