Abstract: An artifical ankle joint for use as an ankle between a foot prosthesis and leg prosthesis in an artificial limb. The artificial ankle joint includes a foot plate attached to a foot prosthesis, a leg plate attached to a leg prosthesis, a stem assembly and bearing assembly connected between the plates in which the bearing is a spherical bearing oriented vertically and including an inner race connected to the leg plate about an axis generally horizontal when the ankle joint is in use and an outer race connected with the stem assembly. Resilient structure extends between the plates for providing a degree of resistance to relative movement of the plates and includes a heel spring enclosing the stem assembly and a toe spring spaced from the heel spring with both the toe and heel springs extending between the plates.

Abstract: Herein disclosed is an articulated ankle joint for use in an artificial limb to connect a foot prosthesis to a leg prosthesis. The joint has foot and leg plates for attachment to the respective prostheses, a stem assembly which includes a coil spring and spherical bearing attached between the plates over a heel portion of the foot prosthesis, and a resistance assembly including a coil spring connected between the plates forwardly of the stem assembly. The joint can be used for performing a variety of physical activities in a natural and comfortable manner and has a natural appearance when clothed.