The invention relates to an intervertebral implant (1) designed to be placed in an intervertebral space by 90° pivoting and without preliminary spacing of the vertebrae, that comprises two bearing surfaces (7a, 7b) adapted for interacting with the lower or upper portions of the vertebral bodies on the one hand, and two side surfaces (3a, 3b) substantially perpendicular to the bearing surfaces (7a, 7b) on the other hand. The implant is characterized in that it is elastically deformable so as to be deformed from a placing configuration in which the two side surfaces (3a, 3b) are close to each other into a service configuration in which the two side surfaces (3a, 3b) are spaced apart from each other, and in that it comprises a threaded opening (17) capable of interacting with a tool for pivoting the implant by 90° and troughs (15a, 15b) formed lengthwise in the side surfaces (3a, 3b) and adapted for receiving the blades of said tool for moving the implant from one configuration to the other.
