Abstract
An embodiment includes an exoskeleton robotic system comprising a parallelogram-based remote center of motion (RCM) joint. The RCM mechanism includes a first link that is coupled to a second link, a third link, and a fourth link. A motor is coupled to the third link. A first of the first, second, third, or fourth links includes a first flexure. The first flexure includes a first degree of freedom in a first direction. A second of the first, second, third, or fourth links includes a second flexure, the second flexure including a second degree of freedom in a second direction. The first direction is not parallel to the second direction.