An acetabular implant for a hip joint prosthesis comprising a metal cup shell (2) adapted to be secured in the acetabulum of a patient. The metal cup shell (2) has a hemispherical cavity (6) into which a liner may be inserted to provide a spherical bearing surface for the ball portion of the hip joint....http://www.google.es/patents/US5217499?utm_source=gb-gplus-sharePatente US5217499 - Rim-bearing acetabular component of hip joint prosthesis
Rim-bearing acetabular component of hip joint prosthesis