previous section: 2/8 page: 1/3 next

2Planning the plate insertion

The correct blade plate position with the help of guide wires around the joint

Preparation for correct positioning

Determine the correct blade plate position with the help of guide wires around the joint. Under image intensifier control, pass one guide wire lateral to medial along the tibio-femoral joint line (red). Pass a second guide wire over the anterior surface of the femur to indicate the plane of the patello-femoral joint (green).

The ideal position of the blade plate is shown by the yellow wire. Note that this is parallel to the red wire in the frontal plane (and thus leads to the appropriate varus/valgus) and is parallel to the green line on the end-on view on the femur. This latter parameter ensures that the plate is flush with the lateral cortex.