Static Alignment Optimisation; Dynamic Alignment Optimisation; Torque Values Of The Screw Connections - Ottobock C-Leg 3C98-3 Gebrauchsanweisung

7.1.4 Static alignment optimisation

Static alignment can be substantially improved using the L.A.S.A.R. Posture (743L100=*). In order to achieve
adequate safety while simultaneously providing easy swing phase initiation, please proceed with alignment as fol­
lows:

7.1.5 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)
At the end of the dynamic alignment optimisation, calibration must be performed using the adjustment software.

7.1.6 Torque values of the screw connections

CAUTION
Incorrectly secured screws
Falling due to breakage of load-bearing components caused by screw connections coming loose.
► After completing all settings, the set screws in the tube adapter must be secured before they are tightened to
the specified torque.
► The screws in the clamp bracket must not be secured but only tightened to the specified torque.
Using the 710D4 torque wrench, tighten the corresponding screws in several cycles until the specified torque is
reached.
Screw connection
Tube adapter on prosthetic foot
Clamp bracket on knee joint
Fitting for short residual limb
Rotation adapter or sliding adapter
C-Leg 3C98-3/3C88-3
To determine the load line, have the patient (with shoes) stand on
the force measurement plate with the prosthetic side and on the
height compensation plate with the other leg.
The prosthesis side must be sufficiently loaded (> 35% body
weight). Note the weight display on the L.A.S.A.R. Posture.
Optimise the alignment solely by changing the plantar flexion.
Only make adjustments to the distal and proximal set screws of
the socket adapter on the prosthetic foot, so that the load line
(laser line) runs approx. 30 mm/1.18 inch in front of the align­
ment reference point (= knee axis) of the knee joint.
Preparation for Use
Torque
15 Nm/133 lbf. In.
7 Nm/62 lbf. In.
15 Nm/133 lbf. In.
Ottobock | 67