A prosthetic foot with an adjustable ankle includes an upper portion
coupled to a socket of an amputee. A lower portion is adjustably coupled
to the upper portion, and is attached to a foot member with heel and toe
sections. A movable coupling is disposed between the upper and lower
portions, and includes a displacement member slidably coupled to a
displacement track. The movable coupling allows the toe section to pivot
downward and the heel section to simultaneously displace forward. The
adjustable ankle can be adjusted with an actuator coupled to a tractor
bolt coupled between the upper and lower portions. A sensor is associated
with the upper portion or the lower portion to sense frequency of
contact, force of contact, or orientation of the upper portion or the
lower portion, and to output a corresponding output signal.