Otto Bock 3R15 Instructions For Use Manual page 13

7.3 Optimising the static alignment
► To optimise the static alignment, position the patient on the meas­
uring device.
► In the sagittal plane, check the course of the load line relative to
the marked alignment reference point and correct this if needed
6
(see Figure on page 4).
► In the frontal plane, check the course of the load line relative to
the marked points (prosthetic foot, prosthetic knee joint, spina ili­
aca anterior superior) and correct if needed (see Figure
page 4).
7.4 Optimising during dynamic trial fitting
CAUTION
Adjusting the Settings
Fall due to incorrect or unfamiliar settings
► Only adapt the settings to the patient gradually.
► Explain the effects of the adjustments on the use of the prosthes­
is to the patient.
Restore default settings
► Prior to the dynamic trial fitting, restore the factory settings as
shown in the illustrations if the factory settings have been
7 8
changed ( , and
9
on page 6: Adjust gradually,
►
When resetting, set the axis friction gradually (45°) to minimal res­
istance to motion and then turn back slightly without creating
play .
Setting the load-related braking action (
► Set the load-related braking action as shown in the illustration.
Increase threshold – Joint brakes at a higher load
→
Reduce threshold – Joint brakes at a lower load
→
► Increase gradually (rotation: approx. 45° – 90°).
9
on pages 5 and 6).
Minimal braking action
10
on page 6)
► When the desired effect is reached, continue with "Setting axis
friction".
Setting axis friction (
► Set the axis friction as shown in the illustration.
Decrease play – Increase resistance to motion
→
Increase play – Decrease resistance to motion
→
► Reduce play and increase resistance to motion gradually (rota­
6
on
tion: approx. 20°).
► Set the load-related braking action and axis friction so that the
prosthetic knee joint switches from the stance phase to the swing
phase and no longer jams.
► NOTICE! To prevent increased wear and tear, do not use axis fric­
tion to control the swing phase.
Setting the extension assist (
► Set the extension assist as shown in the illustration if necessary.
Increase spring tension
→
Reduce spring tension
→
► CAUTION! Set the extension assist so that the lower leg of the
prosthesis swings through in the dorsal direction according to the
patient's requirements, but reaches full extension in time before
the next heel strike.
Fine-tuning the settings
► CAUTION! The various settings of the prosthetic knee joint can­
not be adjusted entirely independently of each other. When the
settings cannot be fully adjusted to the comfort needs of the
patient, the settings should be established primarily based on
safety aspects.
► Adapt the settings of the prosthetic knee joint to the patient by
means of fine-tuning and exercises.
11
on page 7)
12
on page 7)
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