The invention involves a fusion implant for a facet joint, comprising a bearing module (1) and a fusion module (2), in which the fusion model (2) is arranged on the bearing module (1) and has a holder for transfacetal fastening means (65), whereby the bearing module (1) includes an expansion element and jaw elements (4, 4′), which have contact surfaces (43) for the lamina (93) on their outer sides moving away from each other and which are arranged to move longitudinally on a guide, so that the distance of the fusion module (6) is changeable using the expansion element. The bearing module forms a secure and safe anchoring for the fusion module, which can be repositioned. In addition, the bearing module has the effect of an augmentation, and as a result treatment is possible even on vertebrae that are weakened by defects.
