Cup comprising: - a metal insertion dome (1), which has a convex, sensibly hemispherical outer anchor face (2), adapted to be anchored in a cotyloid cavity of the patient's pelvis, and having a face of concave reception (3) with annular edge (9), - a permanent immovable articular insert (4), made of ceramic material, having an outer face (5) coupled to the concave reception face (3) of the insertion dome ( 1), and having an inner receiving face (6) having a substantially concave hemispherical joint surface (7), to allow the coupling and pivoting of a femoral prosthesis head or a mobile articular insert, - having the articular insert (4) definitive motionless, of ceramic material, a thickness (E ') of less than or equal to approximately 4 mm, characterized in that: - the insertion dome (1) comprises an annular receiving structure (8) protruding, beyond of the car a receiver (6) of the permanent immovable joint insert (4) inserted, in the insertion dome (1) and having an annular receiving face (10) adapted so that an impactor (15) can be fixed to said face annular receiving (10) in the presence of the permanent immovable articular insert (4), of ceramic material, - having the insertion dome (1), in the vicinity of its annular edge (9), a thickness (E) less than or equal at approximately 4 mm and greater than 2 mm.Cotilo que comprende: - una cúpula de inserción metálica (1), que tiene una cara exterior de anclaje (2) convexa, sensiblemente hemisférica, adaptada para poder ser anclada en una cavidad cotiloide de la pelvis del paciente, y que tiene una cara de recepción cóncava (3) con borde anular (9), - un inserto articular (4) inmóvil definitivo, de material cerámico, que tiene una cara exterior (5) acoplada en la cara de recepción cóncava (3) de la cúpula de inserción (1), y que tiene una cara interior receptora (6) que presenta una 0 superficie articular cóncava (7) sensiblemente hemisférica, para permitir el acoplamiento y pivotamiento de una cabeza de prótesis fem
