The present invention relates to a vertebral implant, in particular to a corporectomy, a vertebral implant fixation device and implantation instrumentation, the implant comprising at least a first body (2) and at least a second body (3) having , each, at least one face having shapes and dimensions complementary to those of at least one face of another body (3, 2) and forming reciprocal interlocking means, to allow assembly of said bodies (2, 3 ) by sliding along a sliding axis and, secondly, at least one locking means (4) retained in at least one of the bodies (2, 3) and at least one stop portion is arranged to pass from a so-called open position allowing sliding for the assembly of said bodies (2, 3) to a so-called closed position, locking said bodies (2, 3) assembled together by the contact between at least said abutment portion and at least a stop (42, 43) of at least one of said bodies ( 2, 3), said stop (42, 43) being oriented non-parallel to the sliding axis and said abutment portion passing from the open position to the closed position, elastically by bending or by torsion La présente invention concerne un implant vertébral, en particulier de corporectomie, un dispositif de fixation d'implant vertébral et une instrumentation d'implantation, l'implant comportant au moins un premier corps (2) et au moins un second corps (3) possédant, chacun, au moins une face ayant des formes et dimensions complémentaires à celles d'au moins une face d'un autre corps (3, 2) et formant des moyens d'emboitement réciproque, pour permettre un assemblage desdits corps (2, 3) par coulissement selon un axe de coulissement et, d'autre part, au moins un moyen de verrouillage (4) retenu dans au moins un des corps (2, 3) et dont au moins une portion de butée est agencée pour passer d'une position, dite ouverte, autorisant le coulissement pour l'assemblage desdits corps (2, 3) à une position, dite fermée, verrouillant lesdits corps (2, 3) assemblés ensemble par le contact entre a
