Abstract: A fixing device is disclosed which is primarily for use in orthopaedics. In one disclosed embodiment the fixing device includes an elongate body having a throughbore, wherein the elongate body has a number of spiral slots in the surface thereof. In use, the fixing device is inserted into an aperture in a bone and a screw is tightened within the throughbore of the elongate body, causing the body to expand and the slots to be closed in order to secure the fixing device in place within the aperture in the bone. An applicator device is also disclosed which in use holds the fixing device in place when a screw is tightened therein.