Facet joint replacement

[Subject] Offer the system and method which were constituted so that the natural function of the joint between 椎 might be copied and which were improved. [Solution means] The method and equipment for replacing the damage to the joint between 椎 of a patient's spinal column, a thin film, a back 靱 belt, other structures, etc. , externally caused injury, a pathological change, or an unhealthy rear element are offered. With 1 enforcement form, such a method and equipment copy the natural function of the backbone by restricting substantially the gap and rotation before and behind the backbone while making possible crookedness of the backbone, expansion, and lateral bending. [Selection figure] Fig. 1A