What are the grading standards for muscle tone?

In daily life, the occurrence of many diseases usually takes a long time. Generally, the condition gradually increases and becomes more and more serious. In fact, most diseases usually have some symptoms in the early stage of onset, but these symptoms are ignored. People's muscle tension is generally graded. Different levels of muscle tension, symptoms and causes of diseases are also different. What is the grading standard of muscle tension?

Level 0 muscle tone is normal muscle tone, level 1 is a slight increase in muscle tone, level 2 is a significant increase in muscle tone, the joints are weak in flexion and extension, and there is a feeling of folding knife when holding. Level 3 muscle tone is significantly enhanced, and the joints are weak in flexion and extension. Level 4 muscle tone is complete stiffness and rigidity, which is the feeling that parents feel when examining their children's legs and limbs cannot be bent.

7 levels of muscle tone

Level 1: Normal muscle tone, muscles are elastic and have a certain degree of toughness. When the limbs move passively, the muscles have appropriate resistance.

Level 2: Muscle tone is slightly increased, the muscle groups are very elastic and hard, and there is slight resistance when the muscles are passively extended and flexed, but active and passive movements are not restricted and can reach the normal range of motion.

Grade 3: Severe increase in muscle tone, hard muscles, strong resistance during passive movement but can reach the normal range of motion; active movement is significantly limited and cannot reach the normal range.

Grade 4: Muscle tone is highly increased, muscles are hard and trembling, and the range of motion is limited due to obvious resistance during passive movement; active movement is more obviously limited or voluntary movement cannot be completed.

Level 5: Muscle tension is too high, muscles are in spasm, limbs are obviously stiff in flexion or extension, passive movements are difficult or impossible, and there is no active movement.

Minus one level: muscle tone is reduced, muscle elasticity is poor and there is no hardness, there is no resistance during passive movement, joint stability is poor and often hyperextension or reflexion; normal movement can be completed during active movement.

Minus two grades: Muscle tone is significantly reduced, muscles are soft, there is no resistance during passive movement, joint instability often manifests as hyperextension deformity or dislocation in severe cases; active movement is not completed fully, and joint movement cannot be completed or is difficult to complete when resisting gravity.

Several special manifestations of muscle tension. Muscle tension classification, let's see how much it is

(1) Knife-like increase in muscle tension

The muscle tone is above level two, the muscles are in spasm, the resistance is large at the beginning of passive movement, and the resistance is significantly weakened or suddenly disappears at the end. The more urgent the passive movement and the stronger the force, the greater the resistance. This is more common in pyramidal tract damage.

(2) Lead pipe rigidity

When the muscle tension is above level three, due to the average increase in the muscle tension of the flexors and extensors, the resistance encountered during passive movement is uniform, like a bent lead pipe. Seen in extrapyramidal damage.

(3) Gear-like rigidity

The muscle tension is mostly above level 4. There is tonic resistance during passive movement, and because of the accompanying tremor, the movement presents a gear-like jerking performance. Seen in patients with Parkinson's disease.

(4) Dystonia

Dystonia is a syndrome in which the patient suffers from torso distortion, abnormal limb postures and repetitive movements due to the simultaneous and continuous contraction of agonist and antagonist muscles. Common uncontrollable abnormal movements include torsional spasms, athetosis, and movements of different rhythms. Dystonia can be divided into primary, secondary and hereditary metabolic.