With the PolyAxNail targeting device, an implant for the treatment of bone fractures can be safely inserted and optimally positioned. The patented joystick is used for easy individual adjustment of the implant to the anatomy and the fracture line. The use of a carbon-fibre-reinforced synthetic material in connection with glass-bead-blasted stainless steel enables the surgeon to see the bone fracture in the X-ray image; at the same time, the material is distinguished by high stability.