Abstract: The physical therapy tools, systems, kits and methods described herein may be used to apply gentle, passive and progressive amounts of pressure (including numerous repetitions of small movements) to achieve therapeutic mobilization of a spinal joint. The tools described herein may include a plurality of pads and actuators, where the pressure within each actuator is controlled so that a continuously varying pressure may be applied to mimic the pressure applied by human hands. These tools may also include a controller and one or more user inputs. The physical therapy tools may be operated at different operating modes (e.g., continuously varying pressure modes, step-pulse high frequency modes, step-pulse low frequency modes) for treating a subject's spine, and may be part of a system or kit. Methods of treating a subject using these physical therapy tools are also described herein.