An acetabular assembly for use in hip arthroplasty includes a shell (10) having a first wall (12) having an outer surface (16) and an inner surface (18), the outer surface having a first radius. A second wall (14) extends from the outer surface of the first wall and has an outer surface (22) and an inner surface (24), the inner surface having a second radius. The second radius of the inner surface of the second wall is greater than the first radius of the outer surface of the first wall. A liner (34) adapted to couple to the inner surface of the first wall.
