Crossover™ Manual V1/62920016 ©Fabtech Systems LLC. All Rights Reserved.
Alignment & First Time Set-Up
The alignment reference line is equal to the weight line
1.
Alignment Reference Line (Socket Bisection)
2.
Knee Axis Reference Point
•
Establish a vertical pylon.
•
Establish the knee center height.
•
Establish the appropriate socket angles. 5 degrees of socket flexion is
recommended.
•
Position the socket so that the alignment reference line bisects the
lateral wall at the ischial level of the socket and falls through or
slightly posterior to the knee axis.
•
Establish the correct length of the prosthesis.
If the weight line is too far anterior to the knee axis, the knee may require much more effort to create a
hyperextension moment that will engage the knee axis and allow for fluid initiation of the knee flexion.
Premature knee flexion may result from a weight line position too posterior to the knee axis and will
make the knee unstable.
10
Figure 2
Figure 2/A
Figure 2/A displays alignment with a
socket flexed at10 degrees.
