A system for assessing soft-tissue injury in a subject. The system comprises means for applying energy internally to tissue of the subject in an inaudible and invisible manner, with no indications to the epidermal tissue of the subject as to when energy is being applied or how much energy is being applied. The applying means has an energy control mechanism for varying parameters of energy application. The system also comprises a subject response unit having input means controlled by the subject in accordance with perceived sensation in tissue acted upon by the energy applying means. The system also includes also data recording means for simultaneously recording parameters of energy application from the energy applying means and parameters of perceived sensation from the subject response unit. With the system, application of energy occurs invisibly and inaudibly at an internal level. The tissue is stimulated from within by the energy. This stands opposed to external energy application, such as with pushing and probing, wherein the force is transmitted to the tissue by external compression. If a valid injury exists, the system will show a positive correlation between the applied energy and subject response. Visually comparing a computer generated graph of the energy intensity versus subject response, synchronized in time, will easily identify any discrepancies between cause and effect.
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