Having practiced physio for many years using numerous modalities for low back pain, I was excited to take the course in the McKenzie Method of Mechanical Diagnosis and Treatment of back pain. While it doesn't apply to every case of low back pain, it has given the majority of people that I have treated considerable relief. One of the best features is that it gives the client control--they learn how to avoid back injuries and how to deal successfully with them when they happen. For the client it is empowering and takes away the fear of injury that limits their activities. Also, when there is a client who walks in with a lateral shift and leaves straight, the look on their face as if we have accomplished a miracle is amazing. If you haven't already done so, I would encourage you to take a McKenzie course asap, and give your clients the power, rather than adding another modality to your arsenal which makes the client more dependent upon a practitioner for their state of health.