<p>A component, e.g. a prosthetic ball and socket joint like an acetabular cup (11) of a prosthetic joint, having a male or female location feature (15) in a surface thereof for mutual interfit with a fixing member (12) of a fixing assembly for securing the fixing member to the surface of the component and optionally for securing the component to a second component by means of a fixing screw (13).</p>
