Ottobock 3R60 Gebrauchsanweisung Seite 19

Clamp the knee joint using the appropriate adapter inserts. For bench alignment, the alignment
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reference line should run through the upper anterior axis (alignment reference point). At
that point the pyramid base should be horizontal. Pay attention to the knee ground distance
and outward rotation of the knee (adapter inserts provide for a rotation of approx. 5°). Recom-
mended positioning of the alignment reference point: 20 mm above the medial tibial plateau.
Connect the foot to the modular knee joint using a tube adapter.
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Mark the centre of the socket proximally and distally on the lateral side. Draw a line through
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both marks from socket brim to the distal end of the socket.
Now position the socket such that the alignment reference line passes through the proximal
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centre mark of the socket. Set the socket flexion to somewhere between 3° and 5°; however,
the individual situation (e.g. hip joint contractures) must be taken into account and, if neces-
sary, more flexion should be provided. Also pay attention to the ischial tuberosity to ground
distance.
Attention
If the residual limb flexion is not taken into account, the joint will be positioned too far to
the front. This will lead to malfunction and premature wear. If required, use the 4R118
Adapter Plate for optimal positioning of the prosthetic knee joint.
Connect the socket and modular knee joint using a corresponding adapter (e.g. 4R111, 4R41,
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4R55, 4R51 Socket Adapter).
4.1.2 Static alignment optimization using 743L100 L.A.S.A.R. posture
(the following steps refer to Fig. 13)
The bench 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:
To make the load line visible, the transfemoral amputee stands on the L.A.S.A.R. Posture with
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the prosthetic side on the force plate and with the other leg on the height compensation panel.
The prosthesis side should be sufficiently loaded (> 35 % of the body weight).
Now adapt the alignment by only adjusting the plantar flexion of the foot. The load line (laser
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line) should be approx. 10 mm anterior to the lower front knee axis.
After step 2, dynamic optimization can take place between parallel bars (see Section 4.3.2).
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4.2 Combination possibilities
INFORMATION
When fabricating a prosthesis for the lower limbs, all of the prosthetic components used have
to meet the requirements in regard to the patient's body weight and activity level.
4.3 Adjustments and final assembly
4.3.1 3R60=KD socket fabrication
4.3.1.1 Lamination prior to trial fitting
• Take a piece of 623T3 Perlon Stockinette twice the length of the plaster model and pull half of
it over the isolated socket. Twist the other half of the stockinette on the distal end and reflect
it over the socket.
• In order to absorb strong forces in the area of the modular knee joint, the socket must be
gradually reinforced with 616G13 Fibreglass Stockinette. To do this, pull over the first layer to
2/3 of the socket length, tie it off and then reflect it up to half of the socket length.
3R60, 3R60=ST, 3R60=KD, 3R60=HD Ottobock | 19