Ankle prostheses (10) comprising: an astragaline component (12) with a lower surface (28) configured for attachment to one of an astragaline bone or a calcaneus bone； a tibial component (20) with an upper surface (72) configured for fixation to the tibia bone or the fibula bone； and a double support component (11) located between the astragaline component and the tibial component, where the double support component comprises a lower support (14), an upper support (18), where the lower support has a surface (50) contoured lower and a rounded arc from a medial to lateral side thereof, where the upper support has a smooth upper surface (82)； where the astragaline component has an upper, contoured surface (24) configured as complementary to the contoured lower surface of the lower support to articulate with the lower support； and where the tibial component has a smooth lower surface (74) that allows the smooth upper surface of the upper support to slide thereon to allow rotational and translational movement in relation thereto, characterized in that the prosthesis also comprises a plate ( 16) of the double support component located between the upper support and the lower support, and characterized in that in addition the upper support is fixed to the plate (16) of the double support component, and the lower support (14) is free to make a translation in relation to the plate (16) of the double support component.Prótesis (10) de tobillo que comprende: un componente (12) astragalino con una superficie (28) inferior configurado para la fijación a uno de un hueso astragalino o un hueso calcáneo； un componente (20) tibial con una superficie (72) superior configurada para la fijación al hueso de la tibia o al hueso del peroné； y un componente (11) de doble soporte situado entre el componente astragalino y el componente tibial, donde el componente de doble soporte comprende un soporte (14) inferior, un soporte (18) superior, donde el soporte inferior tiene una superficie (50) c
