Method for making a metal-backed acetabular implant

An acetabular implant comprising:

• a longitudinal axis;
• a shell having an outer shell surface and an inner shell surface, the outer shell surface configured to contact bone;
• an integument having an outer integument surface and an inner integument surface, the outer integument surface configured to couple to the inner shell surface;
• and
• a plastic bearing having an outer bearing surface and an inner bearing surface, the inner bearing surface defining a socket, the inner integument surface configured to form a friction-fit with the outer bearing surface;
• wherein the inner integument surface comprises a base centered about the longitudinal axis and extending substantially perpendicular to the longitudinal axis;
• and
• wherein the inner integument surface further comprises a first taper portion and a second taper portion, the first taper portion extending a first distance from the base of the integument and the second taper portion extending a second distance from the first taper portion, the second distance exceeding the first distance.