Knowing the science and understanding the evidence are necessary but not sufficient. The question that matters for anyone seeking or delivering treatment is: how do I actually do this?
This is where many textbooks fail. They present the theory comprehensively and then leave the reader to work out the practicalities themselves. Part III exists because the gap between understanding a treatment and delivering it effectively is not trivial. In our experience, the clinical decisions that determine whether electrical stimulation succeeds or fails are often the ones that textbooks skip: which patients are suitable, which device to choose, how to place the electrodes when there are no motor points to target, how to structure a programme that someone can sustain at home for months or years, and how to monitor progress and adjust treatment as the tissue responds.