Prosthetic foot with an adjustable ankle and method

A prosthetic foot (10-10e) with an adjustable ankle (14-,14e) includes a Lipper portion (54-54e) coupled to a socket of an amputee. A lower portion (58-58e) is adjustably coupled to the upper portion, and is attached to a foot member (18) 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 a motor (170) coupled to a tractor bolt (160) coupled between the upper and lower portions. A level sensor (182) can sense the orientation of the upper portion and send a signal to operate the motor to vertically orient the upper portion or level the foot.