Prosthetic device and method with compliant linking member and actuating linking member

A prosthetic device, comprising:

• a foot member comprising an end effector working element and one or more connecting members, the end effector working element comprising a ground-contacting bottom surface, wherein the end effector working element and the one or more connecting members are rigidly connected to one another, the foot member further including a first joint and a second joint, wherein the first joint and the second joint are located between a toe end and a heel end of the foot member;
• a moveable body including a first joint and a second joint;
• a base body directly coupled to the first joint of the foot member at a first location, the base body configured to couple to a residual limb of a user at a second location such that the base body is fixed or non-rotational with respect to the user;
• a compliant linking member disposed between and connected to the second joint of the foot member and the first joint of the moveable body;
• and
• an actuator disposed between and connected to the base body and the second joint of the moveable body,
• wherein the foot member is configured to rotate as a single body relative to the moveable body.