If you have inflamation, pivotal, spiral and sound vibration will benefit you. Pivotal machines move in a see-saw motion. One side goes up and the other goes down and vice-versa (similar to a walking motion). This gentle motion is great for massage, lymphatic drainage, blood flow and circulation.Spiral machines have two totally different motions--Triplanar (up-down/front-back) and Pivotal (see-saw) that can be used independently or together. When used together, these two motors make a figure 8 motion. This is an extremely gentle motion on the gel areas of the spine and joints, with many benefits such as lymphatic drainage, improved circulation, improved bone density, pain reduction, detoxification and muscle building on the higher hertz ranges. Sound vibration uses high powered speakers to create very smooth, soothing vibrations. these motions relax you, detox you and also build muscle on the higher settings. The pivotal motor is great for circulation and microcirculation. This increase in blood flow reduces inflamation. In addition, these high intensity workouts also decrease inflamation.