Accidents or problems might or might not require repeat treatment. Typically it is best to wait 3-6 months right before contemplating it. More often than not repeat treatment is done mainly because some improvement continues to be witnessed and more is sought. Electrical Stimulation: Techniques for example TENS utilize electrical currents https://www.theorthopaedicandpainpractice.com/non-surgical-treatments-for-knee-joint-pain/