The ideal entry point for the DCS is shown on the diagram. The guide wire
for the DCS is positioned at 2 cm proximal to the distal end of femur. On the
lateral view, the distal femur is divided into thirds and the DCS entry site is
located at the junction of the anterior and middle thirds.
Insert the guide wire at the chosen entry site of the DCS. Insert the guide
wire under image intensifier control all the way across the femur. Check the
position of the guide wire carefully to ensure it has been correctly
positioned, with the parallelism already described.