1. A lead assembly for stimulating tissue comprising: a first lead body comprising a first slot arranged in a first orientation; a second lead body comprising a second slot corresponding to the first slot and having a second orientation, the first lead body slidably coupled to the second lead body; a moveable contact disposed in the first slot and the corresponding second slot and moveable from a first position to a second position upon implantation into a patient's body; an energy source connected to the moveable contact to provide energy to stimulate the tissue; and an actuator configured to facilitate movement of the moveable contact from the first position to the second position in response to an instruction from a computing device, wherein the second position is a theoretically optimal position that maximizes a clinical effect of the stimulation of the tissue, and wherein the actuator is in operable communication with at least one of the first lead body and the second lead body to cause sliding relative movement between the lead bodies, which results in movement of the moveable contact to the second position.