The screw with the nut and two washers make a set that enables compression and following fixation of articular fracture of distal femur (B1, B2, and C1 according to AO classification.) The set can be used in combination with retrograde nail or individually.
The screw has a metric thread of a diameter 5 mm and it is made in sizes from 50 to 105 mm. The nut is in three sizes: 16, 21 and 26 mm.
The screw with the nut and the washer is only made of titanium and they improve the properties of the retrograde nail.