主权项 |
1. A device comprising:
a truss structure comprising a posterior portion, a lateral portion, a medial portion, a lateral end, and a medial end, wherein the truss structure receives a foot of a user so that the posterior portion is adjacent to a heel of the foot; an upper anchor spaced from the truss structure; and an actuator coupling the posterior portion of the truss structure to a posterior portion of the upper anchor; wherein a force is applied through the actuator to the posterior portion of the truss structure. |