Spastic muscle tone increase

Tension in the state of muscle relaxation and relaxation is called muscle tone. Muscle tension is the basis for maintaining various postures and normal movements of the body, and it takes many forms. When a patient's joints are passively moved, a sense of impedance appears under the condition of increased muscle tone. This sense of impedance is related to the speed of being moved. When the muscle in the shortened state is stretched quickly, it immediately causes contraction and feels convulsed. When it is stretched to a certain extent, the resistance suddenly disappears, which is called the increase in the tension of the knife-like muscle. Spastic muscle tone is not related to "spasm," which refers to an involuntary muscle contraction.