2. Evaluate sagittal and coronal alignment for correct position of the alignment reference line.
3. The alignment reference line should pass through a sagittal plane bisection of the socket, the knee center and
the posterior 1⁄3 of the foot module.
NOTE: If stability modifications are desired after patient assessment; the reference line can be shifted up to 5 mm
(3/16") anterior or 5 mm (3/16") posterior to the knee center.
DYNAMIC ALIGNMENT
The best way to acquire a dynamic alignment is by having a symmetric gait pattern.
The initial dynamic assessment is important for getting the user familiar with relying on the prosthesis. Össur
recommends that this assessment is completed at the parallel bars. Complete general dynamic alignment at the
same time.
1. Evaluate the user's level of voluntary control by having the user walk with the device powered off. The user
should have the ability to maintain knee stability when the power is off.
2. Use hip extension to maintain stability into stance.
3. Have the user experience the response, the roll-over, of the foot.
4. Load the heel and allow the knee to flex, thus experience the resistance provided by the knee.
a. Control the rate of the knee flexion with hip extension.
b. Perform rapid loading of the prosthesis with use of the parallel bars.
5. Train the user to maintain normal step length on the sound side.
6. Ask the user to sit down using the stance resistance of the device.
CAUTION: Errors that can occur during alignment and adjustment of the device, can result in malfunction of the
device. This can cause the user to fall.
COMPLETING SETUP
SOCKET/ FRAME CONTACT POINTS
Care should be taken when configuring the socket / frame and adapters so that contact only occurs at the posterior
apex of the device.
DO NOT remove the devices protective cover. This will immediately void the warranty.
ACCOMPANYING SOFTWARE
Prosthetists have the option of using RHEOLOGIC Workbench for Windows PC and Össur Logic in expert mode
for Apple iOS devices to set up and adjust parameters in the knee.
The end user can use Össur Logic in the default user mode to monitor basic knee parameters such as battery
status and step count.
For more information please refer to the instructions for use for the individual software products.
SPECIFICATIONS
STRUCTURAL SPECIF ICATION
• Net weight: 1.61 kg (3.56 lbs)
• Frame construction: Aluminum
• Knee flexion available: 120 degrees
• Clearance and dimensions (Figure 2)
SOFTWARE COMPATIBILITY
RHEOLOGIC
software version 1.2 or greater for PCs or Össur Logic software for iOS devices.
TM
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