Atlantoaxial lateral mass joint fusion appliance

The invention discloses an atlantoaxial lateral mass joint fusion appliance. The atlantoaxial lateral mass joint fusion appliance comprises a first structure of which the temperature is 20 DEG C or above and a second structure of which the temperature is 0-8 DEG C, wherein the second structure is formed by the compressing of the first structure in the same direction; when the temperature is raisedto 20 DEG C or above under the second structural state, the second structure can be restored to the first structure; and the outside outline of the first structure and the outside outline of the second structure adopt a polyhedron-shaped structure or a curved surface body-shaped structure. The atlantoaxial lateral mass joint fusion appliance disclosed by the invention is transplanted from the rear part of an atlantoaxial lateral mass joint, and during transplanting, large operation space is not needed, so that the operation is simple and convenient, damage to joints and surrounding structuresis low, the resetting eff