Abstract: A hydraulic ankle assembly to be used by a user, wherein the ankle assembly includes a base configured to be attached to a spring assembly, a hydraulic cylinder rotatably attached to the base and configured to dampen rotation of the hydraulic ankle assembly, and a prosthetic adapter portion rotatably attached to the base and the hydraulic cylinder and configured to be attached to a prosthetic worn by the user. The base, the hydraulic cylinder, and the prosthetic adapter portion define a force triangle that defines an axis of rotation of the hydraulic ankle assembly. The axis of rotation is positioned in line with the center of mass of the user when the user is standing. The force triangle reduces forces on the hydraulic cylinder.

Abstract: A prosthetic device includes an elongate support member of carbon filament material having a first surface, and an adapter. The adapter includes a compressible member, a base portion having a contact surface arranged to contact the first surface of the support member, a cavity sized to receive the compressible member, and a connector portion extending from the base portion and configured to releasably secure the prosthetic foot to a prosthesis, wherein application of a force to the connector portion compresses the compressible member to dampen movement of the base portion relative to the support member until the contact surface contacts the first surface.

Abstract: A prosthetic foot includes a base spring, a top spring assembly, a connector assembly, and a heel cushion. The top spring assembly includes first and second spring members, and first and second bond connections. The second spring member extends parallel with and spaced apart from the first spring member. The first bond connection is between distal ends of the first and second spring members, and the second bond connection is between a distal end of the second spring member and a top surface of the base spring. The top spring assembly has a first portion arranged horizontally, and a second portion arranged vertically. The connector is connected to a proximal end of the top spring assembly to connect the prosthetic foot to a lower limb prosthesis. The heel cushion is mounted to the base spring at a location spaced forward of a heel end of the base spring.