Myoelectrical Activity and Muscle Morphology in a Rat Model of Myofascial Trigger Points Induced by Blunt Trauma to the Vastus Medialis

Active MTrPs can be provoked by repeated blunt injury. Active MTrPs are a group of muscle fibres with abnormal shapes and abnormal myoelectrical potentials. External stimulation provokes low-voltage responses in MTrPs, which is different from the response of normal muscle fibres.