The invention is an ankle prosthesis (1) to be applied on the patients with ankle joint damage, in a manner such that the ankle joint motion ratio is closer to the normal ankle functions, characterized in that it comprises the following； a tibial stem (10) which has a component intersection region (14) which enables its engagement with the tibial component (20) by means of being fitted on the stem stabilization groove (21) at its bottom surface, a tibial component (20) which has a stem stabilization groove (21) on which component intersection region (14) in said tibial stem (10) is fitted, a ball (23) which is fitted on the ball bearing (44) in the talar component (40) on the bottom surface on said tibial component (20) and enables front-rear linear motion within the ball bearing (44), an insert (30) having a ball motion gap (36) which consists of a region restricted by an anterior ball motion groove (33) and a posterior ball motion groove (34) wherein the ball (23) in the tibial component (20) can be able to move, talar component housing channels (35) which enable connection between insert (30) and talar component (40) by means of fitting on the insert talar component channels (45) which are disposed on the talar component (40) at the bottom portion of said insert (30), a talar component (40) having a ball bearing (44) on which a ball (23) disposed on the bottom portion of the tibial component (20) can perform front-rear linear motion on its upper surface, on the upper surface of said talar component (40), insert talar component channels (45) which are fitted on the talar component housing channels (35) disposed on the lower portion of the insert (30) side surface (37).L'invention concerne une prothèse de la cheville (1) devant être appliquée à des patients souffrant d'une altération articulaire de la cheville, de façon telle que le rapport de mouvement d'articulation de cheville soit plus proche des fonctions normales de la cheville, caractérisée en ce qu'elle com
