An interferential current therapy kit for treatment of a patient following an orthopedic surgery, includes, within a container for facilitating the distribution and transport of the kit, one or multiple control units including a stimulation power supply and a plurality of electrodes configured to be in electrical communication with the stimulation power supply. The plurality of electrodes are configured to be disposed on an epidermis of the patient and arranged to supply transcutaneous electrical impulses to a therapeutic target area when supplied power by the stimulation power supply employing an interferential current therapy technique. The kit also includes an electrode placement aid adapted to assist the health care provider and team, and the patient with placement of the plurality of electrodes with respect to the site of the previous orthopedic surgery, thereby increasing a likelihood of efficacious and safe placement of the plurality of electrodes.