Abstract: A prosthetic ankle including a talar component and a tibial component. At least a portion of top surface of the talar component has a convex curvature, relative to a location above the top surface, in the anterior to posterior direction as viewed in a sagittal plane cross-section, and a concave curvature relative to a location above the top surface, in the medial to lateral direction. An axis of cone projected based on medial and lateral circles located in medial and lateral sagittal plane cross-sections which approximate the average radius of curvature of the top surface of the talar component as viewed in medial and lateral sagittal plane cross-sections, has a total offset angle from the lateral direction in the range of 0° to 45°. In another aspect, the present invention further comprises a bearing component adapted for location between the tibial component and the talar component.

Abstract: A prosthetic ankle including a talar component and a tibial component. At least a portion of top surface of the talar component has a convex curvature, relative to a location above the top surface, in the anterior to posterior direction as viewed in a sagittal plane cross-section, and a concave curvature relative to a location above the top surface, in the medial to lateral direction. An axis of cone projected based on medial and lateral circles located in medial and lateral sagittal plane cross-sections which approximate the average radius of curvature of the top surface of the talar component as viewed in medial and lateral sagittal plane cross-sections, has a total offset angle from the lateral direction in the range of 0° to 45°. In another aspect, the present invention further comprises a bearing component adapted for location between the tibial component and the talar component.

Abstract: A prosthetic ankle comprising a talar component and a tibial component. At least a portion of top surface of the talar component has a convex curvature, relative to a location above the top surface, in the anterior to posterior direction as viewed in a sagittal plane cross-section, a concave curvature relative to a location above the top surface, in the medial to lateral direction, and an average radius of curvature of at least a major portion of the medial side of the top surface of the talar component is larger than an average radius of curvature of at least a major portion of the lateral side of the top surface of the talar component as viewed in sagittal plane cross-sections on the lateral and medial sides. A bearing component for location between the tibial and talar component is also described.

Abstract: A prosthetic ankle comprising a talar component and a tibial component. At least a portion of top surf ace of the talar component has a convex curvature, relative to a location above the top surface, in the anterior to posterior direction as viewed in a sagittal plane cross-section, a concave curvature relative to a location above the top surf ace, in the medial to lateral direction, and an average radius of curvature of at least a major portion of the medial side of the top surface of the talar component is larger than an average radius of curvature of at least a major portion of the lateral side of the top surface of the talar component as viewed in sagittal plane cross-sections on the lateral and medial sides. A bearing component for location between the tibial and talar component is also described.