An implant device for total ankle replacement

An implant device for total ankle replacement comprising:

• a tibia implant 100 having at least one angularly positioned cylindrical projection tibia peg 103 on a tibia mating surface 101, a tibial ankle surface 102 of the said tibia implant 100 is provided with a raised lip tibia stopper ridge 105 on its rear edge for the prevention of the dislocation of a sliding interface 300;
• a talus implant 200 having at least one angularly positioned cylindrical projection talus peg 203 on a talus mating surface 201, a talus ankle surface 202 is provided with at least one raised projection guiding ridge 204 running along the entire anterior-posterior length of the said talus implant 200 and a raised projection talus stopper ridge 205 running along the partial anterior-posterior length of the said talus implant 200;
• an unattached mobile structure sliding interface 300 positioned between the tibial ankle surface 102 and the talus ankle surface 202 in a sandwiched manner having a surface tibia face 301 of the sliding interface 300 complementing the tibial ankle surface 102 of the tibia implant 100, a surface talus face 302 of the sliding interface 300 having at least one negative impression of the guiding ridges 204 of the talus implant 200 as a guiding groove 303 and a negative impression of the talus stopper ridge 205 of the talus implant 200 as a stopper groove 304.