Intervertebral prosthesis ( 1 ), in particular intervertebral disk prosthesis, with a central axis ( 6 ) and comprising A) a first prosthetic component ( 2 ) having a first apposition surface ( 4 ) and a first inner surface ( 7 ), both being disposed transversely to the central axis ( 6 ) and having a spherical recess ( 11 )； B) a second prosthetic component ( 3 ) having a second apposition surface ( 5 ) and a second inner surface ( 8 ) both being disposed transversely to the central axis ( 6 ) and having a calotte ( 9 ) congruent with said recess ( 11 )； C) the first and second prosthetic components ( 2；3 ) being connectable in an articulated manner by means of the calotte ( 9 ) which may be slidably received in the recess ( 11 )； whereby D) the first and second prosthetic components ( 2；3 ) have a width B and a length H each being transverse to the central axis ( 6 ), said first and second prosthetic components ( 2；3 ) further comprise a longitudinal axis L<；SUB>；1<；/SUB>；, respectively L<；SUB>；2 <；/SUB>；extending parallel to the respective length H； and whereby E) the length H is greater than the width B, such that the prosthetic components ( 2；3 ) may be put into a position in the intervertebral space in which the two longitudinal axes L<；SUB>；1 <；/SUB>；and L<；SUB>；2 <；/SUB>；intersect each other at an angle alpha>；0° when being projected in a plane being orthogonal to the central axis ( 6 ).L’invention concerne une prothèse d’articulation comprenant au moins deux éléments (2, 3) ayant chacun une couche de surface d’articulation (10, 11) coopérant sur un matériau de substrat. Au moins une desdites couches de surface d’articulation comprend du carbone sous forme de diamant amorphe ； ou du TiN sur une couche de liaison (12, 13) collée au matériau de substrat. Cette prothèse d’articulation permet d’obtenir une réduction du nombre de débris d’usure et présente de meilleures propriétés de fonctionnement à sec.
