Ossur Total Knee 2000 - STATIC ALIGNMENT; DYNAMIC ALIGNMENT

8
Patient Weight Colour Type
- kg (- lbs) Black Regular
- kg (- lbs) Red Firm
- kg (- lbs) Yellow Extra Firm
• Re-install the bumper cover by hooking the groove under the chassis
front and pushing the two pins into the chassis holes.
• Active patients may require a stiffer bumper
• Patients who have previously worn a prosthesis without a stance-
flexion feature may initially prefer a stiffer bumper.
• We suggest trying a softer bumper after two weeks of trial. This helps
the patient develop a security with the knee. Doing this will also help
make the transition to the stance-flexion characteristic more
acceptable.
STATIC ALIGNMENT
For safety, please make initial adjustments with patient standing between
parallel bars!
• Fit prosthesis and check for correct length.
• Make sure foot is flat on the floor, knee is in neutral position and
socket angles are correct.
• When the patient shifts weight onto the prosthesis, the geometric lock
is activated and the bumper should be slightly compressed. Modify
alignment if necessary.
• Explain function of stance flexion/geometric lock to patient. Ask
patient to activate it by stepping forward with prosthesis and
transferring weight onto heel.
• Patient should become accustomed to activating geometric lock and
resulting stance flexion movement.
• Knee cannot collapse as long as geometric lock is activated.
• Preset swing flexion resistance, Valve F (, Figure )
a. Sit patient on chair. Extend prosthetic knee. Let it fall into flexion.
b. Increase resistance of Valve F until a small bump observed at °
flexion angle.
DYNAMIC ALIGNMENT
The model  knee provides smooth and fluid swing control during
normal ambulation and allows changes in cadence.
For safety, please make initial adjustments with patient standing between
parallel bars!
Valve adjustment – F, H, E (Figure )
Valve Factory setting Function
Valve F
¾ open
Aects swing exion resistance from °-
° (fast walking only)
Valve H
¾ open
Aects swing exion resistance from °-
° (slower walking)
Valve E ½ open
Aects whole swing extension resistance,
°- °
Use small flathead screwdriver for adjustment.