Idiomas disponibles
Idiomas disponibles
3–
Bench assembly.
Preparation :
Trace on the socket the build lines and the knee
joint center line.
Alignment in the sagittal plane :
The build line should go through the knee joint
center marked on the socket and 60 to 70 mm
behind the point where the blade gets in contact
with the ground.
The knee-ground assembly height should be from
30 to 50 mm higher than that of the patient (shoe
included).
Alignment in the front plane :
The build line should go through the center of the
socket and through the center of the blade (the
blade should have an external rotation of a few
degrees).
Finishing :
After adjustment and alignment, tighten the
screws to torque 6 Nm and use Proteor XC047
adhesive to secure them.
4-
Alignment (with the patient).
1– Jump from one foot to the other : the blade must stand flat on the ground (frontal view).
2– Hopping : The blade should propel upwards (neither forwards, nor backwards). If needed, the tilt of the blade should be
modified. In every case the patient should feel that his knee is free and easy to control (no hyper-extension due to the blade
standing on the ground).
3– Running trial : The aim is to limit the muscular and ligament stresses and to decrease the energy used by the patient. For
this purpose the height as well as the frontal and sagittal tilt are adjusted according to the patient's feeling. We look for a
symetric stride at the patient's running speed.
Feeling of sinking too far, of excessive softness : The blade module is probably too flexible. You can check this while
running with small steps on an upward slope : if energy return is not sufficient, the blade is too flexible.
Action : Change the module. For a finer adjustment the blade can be displaced forwards compared to the socket.
Feeling of shocks, discomfort : the blade module is probably too stiff.
Action : Change the module. For a finer adjustment the blade can be displaced backwards compared to the prosthesis.
Feeling that the prosthesis swings outwards or inwards : the blade is probably too far inwards or outwards.
Action : Tilt adjustment in the valgum or varum direction, or translation adjustment are necessary.
Feeling of falling before contact (the shoulder falls) : the prosthesis is probably too short.
Action : the prosthesis height should be increased.
Feeling that it is difficult to achieve the stride : the prosthesis is probably too long.
Action : the prosthesis height should be decreased.
Knee joint center
(15 mm above the joint line)
Vertical build line
Caution!
No flexum.
If the patient
has a real
flexum, it
should be
respected
60 to 70mm
1A92099-0119 page 5/15
