The invention relates to a hip joint prothesis having a metallic prothesis shell (1) with a cavity insert (2) having a spherical recess (3) and with an intermediate element (4) which is made of plastics and arranged between the prothesis shell (1) and the cavity insert (2)....http://www.google.es/patents/US6224633?utm_source=gb-gplus-sharePatente US6224633 - Hip joint prosthesis
