Abstract: An artificial foot device may include a core, a talus body operatively coupled with the core by a first joint, and a toe operatively coupled with the core by a second joint. The first joint may provides for constrained relative movement between the talus body and the core. The second joint may provide for constrained relative movement between the core and the toe. In some embodiments, the core may include a core assembly including a core body, an Achilles sheave coupled with the core body and a toe bracket coupled with the core body. The toe bracket may be operatively coupled with the toe, and the Achilles sheave may be operatively coupled with the talus body. Constrained relative movement between the talus body and the core may substantially correspond to a coordinated movement of a first natural joint and a second natural joint during ambulation of a natural human foot.

Abstract: An artificial foot device may include a talus body, a core operatively coupled with the talus body by a first joint, and a toe operatively coupled with the core by a second joint. A vertical restraint link between the toe and the core and provides a coupling for the second joint. A toe insert limits motion of the toe relative to the core. A toe bushing receives a tension member for operatively coupling the toe to the talus body. The vertical restraint link, toe insert and bushing constrains relative movement between the core and the toe at the second joint. Relative movement of the core and the talus body at the first joint is guided and constrained by pivot bearings. Constrained relative movement between the talus body and the core corresponds to a coordinated movement of a first joint and a second joint during ambulation of a natural human foot.

Abstract: An artificial foot device may include a talus body, a core operatively coupled with the talus body by a first joint, and a toe operatively coupled with the core by a second joint. The first joint may provide for constrained relative movement between the talus body and the core. The second joint may provide for constrained relative movement between the core and the toe. Constrained relative movement between the talus body and the core may substantially correspond to a coordinated movement of a first natural joint and a second natural joint during ambulation of a natural human foot.

Abstract: An artificial foot device may include a core, a talus body operatively coupled with the core by a first joint, and a toe operatively coupled with the core by a second joint. The first joint may provides for constrained relative movement between the talus body and the core. The second joint may provide for constrained relative movement between the core and the toe. In some embodiments, the core may include a core assembly including a core body, an Achilles sheave coupled with the core body and a toe bracket coupled with the core body. The toe bracket may be operatively coupled with the toe, and the Achilles sheave may be operatively coupled with the talus body. Constrained relative movement between the talus body and the core may substantially correspond to a coordinated movement of a first natural joint and a second natural joint during ambulation of a natural human foot.