Patent ID: 8529633

Claim:
An acetabular implant for hip prosthesis, comprising: a metallic hemispherical shaped cup ( 1 ) structured to be fixed to the bottom of an acetabular cavity of an iliac bone, said cup having an axis of symmetry (x-x′); an insert ( 2 ); and a hemispherical kernel ( 4 ), said cup ( 1 ) having an internal cavity ( 1 a ) adapted for receiving said insert ( 2 ), said insert ( 2 ) having a spherical internal cavity ( 2 a ) for receiving an assembly of said hemispherical kernel ( 4 ) having universal movement, and said hemispherical kernel ( 4 ) having an internal cavity ( 4 a ) adapted to cooperate with a femoral head (T) with an articulation capability, wherein the spherical internal cavity ( 2 a ) of the insert ( 2 ) and the internal spherical cavity ( 4 a ) of said hemispherical kernel ( 4 ) have respectively a center of rotation ( 01 , 02 ), the respective centers of rotation ( 01 , 02 ) being aligned on the axis of symmetry (x-x′) of the cup, and being non-coincident when the cup ( 1 ), insert ( 2 ) and kernel ( 4 ) are assembled.