A prosthetic acetabular cup assembly (10) includes a single piece bearing component (14) having an inner bearing surface (34) for receiving a ball attached to a femoral prosthesis and an outer surface (32). Assembly (10) also includes a shell component (12) for attachment to an acetabulum to replace a natural hip socket. Shell component (12) includes an inner surface (20) defining a cavity (26) for receiving bearing component (14) therein. Inner surface (20) of shell component (12) is formed to include an arcuate groove (28) therein. A formed wire (16) is situated in arcuate groove (28) of shell component (12). Wire (16) is configured so that a portion of wire (16) extends radially inwardly from arcuate groove (28) of shell component (12) to engage an arcuate groove (40) formed in bearing component (14) to retain bearing component (14) inside shell component (12). <IMAGE>
