A system to deliver current to an area of interest of a subject is described that includes a power source, a controller electrically coupled to the power source, at least one first electrode electrically coupled to the controller, and at least one second electrode electrically coupled to one of the power source and the controller, with the area of interest positioned between the at least one first electrode and the at least one second electrode. A method of stimulating at least one of bone growth, tissue healing and pain control within an area of interest of a patient is described that includes inserting first and second electrode spaced at a predetermined distance, and further includes directing an electric current between the first and second electrodes so that at least a portion of the electric current passes through the area of interest positioned between the first electrode and the second electrode.