A Single Femoral Guide for multiple functions:

• valgus alignment
• femoral sizing
• rotational orientation

Two alignment options:

MECHANICAL alignment (MA):

it is the classic alignment method, most commonly used, which aims to obtain a joint line perpendicular to the Mechanical Axis and consequently an equal distribution of the load of the lower limb on the medial and lateral compartment.

In extension, the Joint Line, i.e. the plane that contains the support points of the femoral condyles on the tibial plateaus, is inclined on average by 3° in varus.

The tibial resection is carried out perpendicular to the Mechanical Axis of the lower limb, which coincides with the Anatomical Tibial Axis. The tibial resection plane has 3° of valgus with respect to the joint line.

The distal femoral resection must also be carried out perpendicular to the Mechanical Axis, which normally has approximately 5°-7° of valgus with respect to the femoral Anatomical Axis; The resection plane has approximately 3° of varus compared to the joint line.

These 3° angular deviations between the femoral and tibial resections compensate each other and therefore the resection surfaces are parallel to each other and to the Epicondylar Axis.

KINEMATIC alignment (KA):

this alignment method aims to obtain a Joint Line that keeps the morphological and functional characteristics of the individual patient unchanged.

The distal femoral resection is performed with the simple aim of removing the same amount of bone that will be replaced by the prosthesis, without any axial correction.

Consequently, the tibial resection is carried out parallel to the femoral one in order to obtain a symmetrical space.