Proximal fixation of Schanz screws in the case of retrograde technique (Figure 1). On the diaphysis one plate of the ONAS-DPS can be used only (distally a wedge subplate must be used in order to compensate for the femoral shape – Figures 1 and 2). Further, no screw should go through the IM nail proximally (in contact with the distal fixation – Figures 1 and 2) as this would prevent elongation. Four angle stability screws and asymmetrically drilled corresponding screw holes are the same as shown in Figure 2.